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Conserved domains on  [gi|1821496527|ref|WP_165647469|]
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MULTISPECIES: exodeoxyribonuclease III [Sutterella]

Protein Classification

exodeoxyribonuclease III( domain architecture ID 10173387)

exodeoxyribonuclease III is a Mg-dependent 3' to 5' exonuclease acting on dsDNA, which releases 5' phosphomononucleotides as degradation products

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
ExoIII-like_AP-endo cd09086
Escherichia coli exonuclease III (ExoIII) and Neisseria meningitides NExo-like subfamily of ...
4-267 1.12e-123

Escherichia coli exonuclease III (ExoIII) and Neisseria meningitides NExo-like subfamily of the ExoIII family purinic/apyrimidinic (AP) endonucleases; This subfamily includes Escherichia coli ExoIII, Neisseria meningitides NExo,and related proteins. These are ExoIII family AP endonucleases and they belong to the large EEP (exonuclease/endonuclease/phosphatase) superfamily that contains functionally diverse enzymes that share a common catalytic mechanism of cleaving phosphodiester bonds. AP endonucleases participate in the DNA base excision repair (BER) pathway. AP sites are one of the most common lesions in cellular DNA. During BER, the damaged DNA is first recognized by DNA glycosylase. AP endonucleases then catalyze the hydrolytic cleavage of the phosphodiester bond 5' to the AP site, and this is followed by the coordinated actions of DNA polymerase, deoxyribose phosphatase, and DNA ligase. If left unrepaired, AP sites block DNA replication, and have both mutagenic and cytotoxic effects. AP endonucleases can carry out a variety of excision and incision reactions on DNA, including 3'-5' exonuclease, 3'-deoxyribose phosphodiesterase, 3'-phosphatase, and occasionally, nonspecific DNase activities. Different AP endonuclease enzymes catalyze the different reactions with different efficiencies. Many organisms have two AP endonucleases, usually one is the dominant AP endonuclease, the other has weak AP endonuclease activity. For example, Neisseria meningitides Nape and NExo, and exonuclease III (ExoIII) and endonuclease IV (EndoIV) in Escherichia coli. NExo and ExoIII are found in this subfamily. NExo is the non-dominant AP endonuclease. It exhibits strong 3'-5' exonuclease and 3'-deoxyribose phosphodiesterase activities. Escherichia coli ExoIII is an active AP endonuclease, and in addition, it exhibits double strand (ds)-specific 3'-5' exonuclease, exonucleolytic RNase H, 3'-phosphomonoesterase and 3'-phosphodiesterase activities, all catalyzed by a single active site. Class II AP endonucleases have been classified into two families, designated ExoIII and EndoIV, based on their homology to the Escherichia coli enzymes ExoIII and endonuclease IV (EndoIV). This subfamily belongs to the ExoIII family; the EndoIV family belongs to a different superfamily.


:

Pssm-ID: 197320 [Multi-domain]  Cd Length: 254  Bit Score: 352.59  E-value: 1.12e-123
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   4 LRLASWNVNSLKVRLPQVLDWLESAKIDALVMQETKTTDDVFPQTAFAEAGFDVFFLGQKTYNGVALCSRQttvKTSDVV 83
Cdd:cd09086     1 MKIATWNVNSIRARLEQVLDWLKEEDPDVLCLQETKVEDDQFPADAFEALGYHVAVHGQKAYNGVAILSRL---PLEDVR 77
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  84 LGLPG-WPDPQKRFISALLsplaapeqPPIRFCGGYFPNGQAVGSSKYLYKLDWIAVLERTLKTYLADTPRLVLGGDFNI 162
Cdd:cd09086    78 TGFPGdPDDDQARLIAARV--------GGVRVINLYVPNGGDIGSPKFAYKLDWLDRLIRYLQKLLKPDDPLVLVGDFNI 149
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 163 APADADVWNPEAWRGKILCSEPERKALERLFALGLYDSFRLFTQPAERFSWWDYRQSGFERNHGLRIDLLLVSEALKGAV 242
Cdd:cd09086   150 APEDIDVWDPKQLLGKVLFTPEEREALRALLDLGFVDAFRALHPDEKLFTWWDYRAGAFERNRGLRIDHILASPALADRL 229
                         250       260
                  ....*....|....*....|....*
gi 1821496527 243 ESASIDDGPRGNPQPSDHAPVMLDL 267
Cdd:cd09086   230 KDVGIDREPRGWEKPSDHAPVVAEL 254
 
Name Accession Description Interval E-value
ExoIII-like_AP-endo cd09086
Escherichia coli exonuclease III (ExoIII) and Neisseria meningitides NExo-like subfamily of ...
4-267 1.12e-123

Escherichia coli exonuclease III (ExoIII) and Neisseria meningitides NExo-like subfamily of the ExoIII family purinic/apyrimidinic (AP) endonucleases; This subfamily includes Escherichia coli ExoIII, Neisseria meningitides NExo,and related proteins. These are ExoIII family AP endonucleases and they belong to the large EEP (exonuclease/endonuclease/phosphatase) superfamily that contains functionally diverse enzymes that share a common catalytic mechanism of cleaving phosphodiester bonds. AP endonucleases participate in the DNA base excision repair (BER) pathway. AP sites are one of the most common lesions in cellular DNA. During BER, the damaged DNA is first recognized by DNA glycosylase. AP endonucleases then catalyze the hydrolytic cleavage of the phosphodiester bond 5' to the AP site, and this is followed by the coordinated actions of DNA polymerase, deoxyribose phosphatase, and DNA ligase. If left unrepaired, AP sites block DNA replication, and have both mutagenic and cytotoxic effects. AP endonucleases can carry out a variety of excision and incision reactions on DNA, including 3'-5' exonuclease, 3'-deoxyribose phosphodiesterase, 3'-phosphatase, and occasionally, nonspecific DNase activities. Different AP endonuclease enzymes catalyze the different reactions with different efficiencies. Many organisms have two AP endonucleases, usually one is the dominant AP endonuclease, the other has weak AP endonuclease activity. For example, Neisseria meningitides Nape and NExo, and exonuclease III (ExoIII) and endonuclease IV (EndoIV) in Escherichia coli. NExo and ExoIII are found in this subfamily. NExo is the non-dominant AP endonuclease. It exhibits strong 3'-5' exonuclease and 3'-deoxyribose phosphodiesterase activities. Escherichia coli ExoIII is an active AP endonuclease, and in addition, it exhibits double strand (ds)-specific 3'-5' exonuclease, exonucleolytic RNase H, 3'-phosphomonoesterase and 3'-phosphodiesterase activities, all catalyzed by a single active site. Class II AP endonucleases have been classified into two families, designated ExoIII and EndoIV, based on their homology to the Escherichia coli enzymes ExoIII and endonuclease IV (EndoIV). This subfamily belongs to the ExoIII family; the EndoIV family belongs to a different superfamily.


Pssm-ID: 197320 [Multi-domain]  Cd Length: 254  Bit Score: 352.59  E-value: 1.12e-123
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   4 LRLASWNVNSLKVRLPQVLDWLESAKIDALVMQETKTTDDVFPQTAFAEAGFDVFFLGQKTYNGVALCSRQttvKTSDVV 83
Cdd:cd09086     1 MKIATWNVNSIRARLEQVLDWLKEEDPDVLCLQETKVEDDQFPADAFEALGYHVAVHGQKAYNGVAILSRL---PLEDVR 77
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  84 LGLPG-WPDPQKRFISALLsplaapeqPPIRFCGGYFPNGQAVGSSKYLYKLDWIAVLERTLKTYLADTPRLVLGGDFNI 162
Cdd:cd09086    78 TGFPGdPDDDQARLIAARV--------GGVRVINLYVPNGGDIGSPKFAYKLDWLDRLIRYLQKLLKPDDPLVLVGDFNI 149
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 163 APADADVWNPEAWRGKILCSEPERKALERLFALGLYDSFRLFTQPAERFSWWDYRQSGFERNHGLRIDLLLVSEALKGAV 242
Cdd:cd09086   150 APEDIDVWDPKQLLGKVLFTPEEREALRALLDLGFVDAFRALHPDEKLFTWWDYRAGAFERNRGLRIDHILASPALADRL 229
                         250       260
                  ....*....|....*....|....*
gi 1821496527 243 ESASIDDGPRGNPQPSDHAPVMLDL 267
Cdd:cd09086   230 KDVGIDREPRGWEKPSDHAPVVAEL 254
XthA COG0708
Exonuclease III [Replication, recombination and repair];
4-267 9.36e-118

Exonuclease III [Replication, recombination and repair];


Pssm-ID: 440472 [Multi-domain]  Cd Length: 256  Bit Score: 337.43  E-value: 9.36e-118
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   4 LRLASWNVNSLKVRLPQVLDWLESAKIDALVMQETKTTDDVFPQTAFAEAGFDVFFLGQKTYNGVALCSRQttvKTSDVV 83
Cdd:COG0708     1 MKIASWNVNGIRARLPKLLDWLAEEDPDVLCLQETKAQDEQFPLEAFEAAGYHVYFHGQKGYNGVAILSRL---PPEDVR 77
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  84 LGLPG-WPDPQKRFISALLsplaapeqPPIRFCGGYFPNGQAVGSSKYLYKLDWIAVLERTLKTYLADTPRLVLGGDFNI 162
Cdd:COG0708    78 RGLGGdEFDAEGRYIEADF--------GGVRVVSLYVPNGGSVGSEKFDYKLRFLDALRAYLAELLAPGRPLILCGDFNI 149
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 163 APADADVWNPEAWRGKILCSEPERKALERLFALGLYDSFRLFTQPAER-FSWWDYRQSGFERNHGLRIDLLLVSEALKGA 241
Cdd:COG0708   150 APTEIDVKNPKANLKNAGFLPEERAWFDRLLELGLVDAFRALHPDVEGqYTWWSYRAGAFARNRGWRIDYILASPALADR 229
                         250       260
                  ....*....|....*....|....*.
gi 1821496527 242 VESASIDDGPRGNPQPSDHAPVMLDL 267
Cdd:COG0708   230 LKDAGIDREPRGDERPSDHAPVVVEL 255
xth TIGR00633
exodeoxyribonuclease III (xth); All proteins in this family for which functions are known are ...
4-267 5.06e-88

exodeoxyribonuclease III (xth); All proteins in this family for which functions are known are 5' AP endonucleases that funciton in base excision repair and the repair of abasic sites in DNA.This family is based on the phylogenomic analysis of JA Eisen (1999, Ph.D. Thesis, Stanford University). [DNA metabolism, DNA replication, recombination, and repair]


Pssm-ID: 273186 [Multi-domain]  Cd Length: 254  Bit Score: 262.22  E-value: 5.06e-88
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   4 LRLASWNVNSLKVRLPQV-LDWLESAKIDALVMQETKTTDDVFPQTAFAEAGFDVFFLGQKT-YNGVALCSRQttvKTSD 81
Cdd:TIGR00633   1 MKIISWNVNGLRARLHKLfLDWLKEEQPDVLCLQETKVADEQFPAELFEELGYHVFFHGAKKgYSGVAILSKV---EPLD 77
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  82 VVLGLPGWP-DPQKRFISAllsplaapEQPPIRFCGGYFPNGQAVGSSKYLYKLDWIAVLERTLKTYLADTPRLVLGGDF 160
Cdd:TIGR00633  78 VRYGFGGEPhDEEGRVITA--------EFDGFTVVNVYVPNGGSRDLERLEYKLQFWDALFQYLEKELDAGKPVVICGDM 149
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 161 NIAPADADVWNPEAWRGKILCSEPERKALERLFALGLYDSFRLFT-QPAERFSWWDYRQSGFERNHGLRIDLLLVSEALK 239
Cdd:TIGR00633 150 NVAHTEIDLGNPKENKGNAGFTPEEREWFDELLEAGFVDTFRHFNpDTGDAYTWWDYRSGARDRNRGWRIDYFLVSEPLA 229
                         250       260
                  ....*....|....*....|....*...
gi 1821496527 240 GAVESASIDDGPRGnpqpSDHAPVMLDL 267
Cdd:TIGR00633 230 ERVVDSYIDSEIRG----SDHCPIVLEL 253
PRK11756 PRK11756
exonuclease III; Provisional
8-269 1.68e-62

exonuclease III; Provisional


Pssm-ID: 236970 [Multi-domain]  Cd Length: 268  Bit Score: 197.42  E-value: 1.68e-62
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   8 SWNVNSLKVRLPQVLDWLESAKIDALVMQETKTTDDVFPQTAFAEAGFDVFFLGQKTYNGVALCSRQTTVKtsdVVLGLP 87
Cdd:PRK11756    5 SFNINGLRARPHQLEAIIEKHQPDVIGLQETKVHDEMFPLEEVEALGYHVFYHGQKGHYGVALLSKQTPIA---VRKGFP 81
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  88 GWP-DPQKRFISALLsplaAPEQPPIRFCGGYFPNGQAVG-SSKYLYKLDWIAVLERTLKTYLADTPRLVLGGDFNIAPA 165
Cdd:PRK11756   82 TDDeEAQRRIIMATI----PTPNGNLTVINGYFPQGESRDhPTKFPAKRQFYQDLQNYLETELSPDNPLLIMGDMNISPT 157
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 166 DADVW----NPEAW--RGKilCS-EP-ERKALERLFALGLYDSFR-LFTQPAERFSWWDYRQSGFERNHGLRIDLLLVSE 236
Cdd:PRK11756  158 DLDIGigeeNRKRWlrTGK--CSfLPeEREWLDRLMDWGLVDTFRqLNPDVNDRFSWFDYRSKGFDDNRGLRIDLILATQ 235
                         250       260       270
                  ....*....|....*....|....*....|...
gi 1821496527 237 ALKGAVESASIDDGPRGNPQPSDHAPVMLDLSL 269
Cdd:PRK11756  236 PLAERCVETGIDYDIRGMEKPSDHAPIWATFKL 268
Exo_endo_phos pfam03372
Endonuclease/Exonuclease/phosphatase family; This large family of proteins includes magnesium ...
7-162 7.21e-11

Endonuclease/Exonuclease/phosphatase family; This large family of proteins includes magnesium dependent endonucleases and a large number of phosphatases involved in intracellular signalling. This family includes: AP endonuclease proteins EC:4.2.99.18, DNase I proteins EC:3.1.21.1, Synaptojanin an inositol-1,4,5-trisphosphate phosphatase EC:3.1.3.56, Sphingomyelinase EC:3.1.4.12 and Nocturnin.


Pssm-ID: 460902 [Multi-domain]  Cd Length: 183  Bit Score: 59.93  E-value: 7.21e-11
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   7 ASWNVNSL-------KVRLPQVLDWLESAKIDALVMQETKTTDDVFPQTAFAEAGFDVFFL---GQKTYNGVALCSRQTT 76
Cdd:pfam03372   1 LTWNVNGGnadaagdDRKLDALAALIRAYDPDVVALQETDDDDASRLLLALLAYGGFLSYGgpgGGGGGGGVAILSRYPL 80
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  77 VKTSDVVLGLPGWPDpqkrfisalLSPLAAPEQPPIRFCGGYFPNgqAVGSSKYLYKLDWIAVLERTLKTYLADTPRLVL 156
Cdd:pfam03372  81 SSVILVDLGEFGDPA---------LRGAIAPFAGVLVVPLVLTLA--PHASPRLARDEQRADLLLLLLALLAPRSEPVIL 149

                  ....*.
gi 1821496527 157 GGDFNI 162
Cdd:pfam03372 150 AGDFNA 155
 
Name Accession Description Interval E-value
ExoIII-like_AP-endo cd09086
Escherichia coli exonuclease III (ExoIII) and Neisseria meningitides NExo-like subfamily of ...
4-267 1.12e-123

Escherichia coli exonuclease III (ExoIII) and Neisseria meningitides NExo-like subfamily of the ExoIII family purinic/apyrimidinic (AP) endonucleases; This subfamily includes Escherichia coli ExoIII, Neisseria meningitides NExo,and related proteins. These are ExoIII family AP endonucleases and they belong to the large EEP (exonuclease/endonuclease/phosphatase) superfamily that contains functionally diverse enzymes that share a common catalytic mechanism of cleaving phosphodiester bonds. AP endonucleases participate in the DNA base excision repair (BER) pathway. AP sites are one of the most common lesions in cellular DNA. During BER, the damaged DNA is first recognized by DNA glycosylase. AP endonucleases then catalyze the hydrolytic cleavage of the phosphodiester bond 5' to the AP site, and this is followed by the coordinated actions of DNA polymerase, deoxyribose phosphatase, and DNA ligase. If left unrepaired, AP sites block DNA replication, and have both mutagenic and cytotoxic effects. AP endonucleases can carry out a variety of excision and incision reactions on DNA, including 3'-5' exonuclease, 3'-deoxyribose phosphodiesterase, 3'-phosphatase, and occasionally, nonspecific DNase activities. Different AP endonuclease enzymes catalyze the different reactions with different efficiencies. Many organisms have two AP endonucleases, usually one is the dominant AP endonuclease, the other has weak AP endonuclease activity. For example, Neisseria meningitides Nape and NExo, and exonuclease III (ExoIII) and endonuclease IV (EndoIV) in Escherichia coli. NExo and ExoIII are found in this subfamily. NExo is the non-dominant AP endonuclease. It exhibits strong 3'-5' exonuclease and 3'-deoxyribose phosphodiesterase activities. Escherichia coli ExoIII is an active AP endonuclease, and in addition, it exhibits double strand (ds)-specific 3'-5' exonuclease, exonucleolytic RNase H, 3'-phosphomonoesterase and 3'-phosphodiesterase activities, all catalyzed by a single active site. Class II AP endonucleases have been classified into two families, designated ExoIII and EndoIV, based on their homology to the Escherichia coli enzymes ExoIII and endonuclease IV (EndoIV). This subfamily belongs to the ExoIII family; the EndoIV family belongs to a different superfamily.


Pssm-ID: 197320 [Multi-domain]  Cd Length: 254  Bit Score: 352.59  E-value: 1.12e-123
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   4 LRLASWNVNSLKVRLPQVLDWLESAKIDALVMQETKTTDDVFPQTAFAEAGFDVFFLGQKTYNGVALCSRQttvKTSDVV 83
Cdd:cd09086     1 MKIATWNVNSIRARLEQVLDWLKEEDPDVLCLQETKVEDDQFPADAFEALGYHVAVHGQKAYNGVAILSRL---PLEDVR 77
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  84 LGLPG-WPDPQKRFISALLsplaapeqPPIRFCGGYFPNGQAVGSSKYLYKLDWIAVLERTLKTYLADTPRLVLGGDFNI 162
Cdd:cd09086    78 TGFPGdPDDDQARLIAARV--------GGVRVINLYVPNGGDIGSPKFAYKLDWLDRLIRYLQKLLKPDDPLVLVGDFNI 149
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 163 APADADVWNPEAWRGKILCSEPERKALERLFALGLYDSFRLFTQPAERFSWWDYRQSGFERNHGLRIDLLLVSEALKGAV 242
Cdd:cd09086   150 APEDIDVWDPKQLLGKVLFTPEEREALRALLDLGFVDAFRALHPDEKLFTWWDYRAGAFERNRGLRIDHILASPALADRL 229
                         250       260
                  ....*....|....*....|....*
gi 1821496527 243 ESASIDDGPRGNPQPSDHAPVMLDL 267
Cdd:cd09086   230 KDVGIDREPRGWEKPSDHAPVVAEL 254
XthA COG0708
Exonuclease III [Replication, recombination and repair];
4-267 9.36e-118

Exonuclease III [Replication, recombination and repair];


Pssm-ID: 440472 [Multi-domain]  Cd Length: 256  Bit Score: 337.43  E-value: 9.36e-118
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   4 LRLASWNVNSLKVRLPQVLDWLESAKIDALVMQETKTTDDVFPQTAFAEAGFDVFFLGQKTYNGVALCSRQttvKTSDVV 83
Cdd:COG0708     1 MKIASWNVNGIRARLPKLLDWLAEEDPDVLCLQETKAQDEQFPLEAFEAAGYHVYFHGQKGYNGVAILSRL---PPEDVR 77
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  84 LGLPG-WPDPQKRFISALLsplaapeqPPIRFCGGYFPNGQAVGSSKYLYKLDWIAVLERTLKTYLADTPRLVLGGDFNI 162
Cdd:COG0708    78 RGLGGdEFDAEGRYIEADF--------GGVRVVSLYVPNGGSVGSEKFDYKLRFLDALRAYLAELLAPGRPLILCGDFNI 149
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 163 APADADVWNPEAWRGKILCSEPERKALERLFALGLYDSFRLFTQPAER-FSWWDYRQSGFERNHGLRIDLLLVSEALKGA 241
Cdd:COG0708   150 APTEIDVKNPKANLKNAGFLPEERAWFDRLLELGLVDAFRALHPDVEGqYTWWSYRAGAFARNRGWRIDYILASPALADR 229
                         250       260
                  ....*....|....*....|....*.
gi 1821496527 242 VESASIDDGPRGNPQPSDHAPVMLDL 267
Cdd:COG0708   230 LKDAGIDREPRGDERPSDHAPVVVEL 255
xth TIGR00633
exodeoxyribonuclease III (xth); All proteins in this family for which functions are known are ...
4-267 5.06e-88

exodeoxyribonuclease III (xth); All proteins in this family for which functions are known are 5' AP endonucleases that funciton in base excision repair and the repair of abasic sites in DNA.This family is based on the phylogenomic analysis of JA Eisen (1999, Ph.D. Thesis, Stanford University). [DNA metabolism, DNA replication, recombination, and repair]


Pssm-ID: 273186 [Multi-domain]  Cd Length: 254  Bit Score: 262.22  E-value: 5.06e-88
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   4 LRLASWNVNSLKVRLPQV-LDWLESAKIDALVMQETKTTDDVFPQTAFAEAGFDVFFLGQKT-YNGVALCSRQttvKTSD 81
Cdd:TIGR00633   1 MKIISWNVNGLRARLHKLfLDWLKEEQPDVLCLQETKVADEQFPAELFEELGYHVFFHGAKKgYSGVAILSKV---EPLD 77
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  82 VVLGLPGWP-DPQKRFISAllsplaapEQPPIRFCGGYFPNGQAVGSSKYLYKLDWIAVLERTLKTYLADTPRLVLGGDF 160
Cdd:TIGR00633  78 VRYGFGGEPhDEEGRVITA--------EFDGFTVVNVYVPNGGSRDLERLEYKLQFWDALFQYLEKELDAGKPVVICGDM 149
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 161 NIAPADADVWNPEAWRGKILCSEPERKALERLFALGLYDSFRLFT-QPAERFSWWDYRQSGFERNHGLRIDLLLVSEALK 239
Cdd:TIGR00633 150 NVAHTEIDLGNPKENKGNAGFTPEEREWFDELLEAGFVDTFRHFNpDTGDAYTWWDYRSGARDRNRGWRIDYFLVSEPLA 229
                         250       260
                  ....*....|....*....|....*...
gi 1821496527 240 GAVESASIDDGPRGnpqpSDHAPVMLDL 267
Cdd:TIGR00633 230 ERVVDSYIDSEIRG----SDHCPIVLEL 253
exoDNase_III TIGR00195
exodeoxyribonuclease III; The model brings in reverse transcriptases at scores below 50, model ...
4-267 5.09e-84

exodeoxyribonuclease III; The model brings in reverse transcriptases at scores below 50, model also contains eukaryotic apurinic/apyrimidinic endonucleases which group in the same family [DNA metabolism, DNA replication, recombination, and repair]


Pssm-ID: 272954 [Multi-domain]  Cd Length: 254  Bit Score: 251.92  E-value: 5.09e-84
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   4 LRLASWNVNSLKVRLPQVLDWLESAKIDALVMQETKTTDDVFPQTAFAEAGFDVFFLGQKTYNGVALCSRQTTvktSDVV 83
Cdd:TIGR00195   1 MKIISWNVNGLRARPHKGLAWLKENQPDVLCLQETKVQDEQFPLEPFHKEGYHVFFSGQKGYSGVAIFSKEEP---ISVR 77
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  84 LGLPGWP-DPQKRFISAllsplaapEQPPIRFCGGYFPNGQAVGSSKYLYKLDWIAVLERTLKTYLADTPRLVLGGDFNI 162
Cdd:TIGR00195  78 RGFGVEEeDAEGRIIMA--------EFDSFLVINGYFPNGSRDDSEKLPYKLQWLEALQNYLEKLVDKDKPVLICGDMNI 149
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 163 APADADVWNPEAWRGKILCSEPERKALERLFALGLYDSFRLFTQPAERFSWWDYRQSGFERNHGLRIDLLLVSEALKGAV 242
Cdd:TIGR00195 150 APTEIDLHIPDENRNHTGFLPEEREWLDRLLEAGLVDTFRKFNPDEGAYSWWDYRTKARDRNRGWRIDYFLVSEPLKERC 229
                         250       260
                  ....*....|....*....|....*
gi 1821496527 243 ESASIDDGPRGNPQPSDHAPVMLDL 267
Cdd:TIGR00195 230 VDCGIDYDIRGSEKPSDHCPVVLEF 254
ExoIII_AP-endo cd09073
Escherichia coli exonuclease III (ExoIII)-like apurinic/apyrimidinic (AP) endonucleases; The ...
5-267 3.82e-77

Escherichia coli exonuclease III (ExoIII)-like apurinic/apyrimidinic (AP) endonucleases; The ExoIII family AP endonucleases belong to the large EEP (exonuclease/endonuclease/phosphatase) superfamily that contains functionally diverse enzymes that share a common catalytic mechanism of cleaving phosphodiester bonds. AP endonucleases participate in the DNA base excision repair (BER) pathway. AP sites are one of the most common lesions in cellular DNA. During BER, the damaged DNA is first recognized by DNA glycosylase. AP endonucleases then catalyze the hydrolytic cleavage of the phosphodiester bond 5' to the AP site, which is then followed by the coordinated actions of DNA polymerase, deoxyribose phosphatase, and DNA ligase. If left unrepaired, AP sites block DNA replication, which have both mutagenic and cytotoxic effects. AP endonucleases can carry out a wide range of excision and incision reactions on DNA, including 3'-5' exonuclease, 3'-deoxyribose phosphodiesterase, 3'-phosphatase, and occasionally, nonspecific DNase activities. Different AP endonuclease enzymes catalyze the different reactions with different efficiences. Many organisms have two functional AP endonucleases, for example, APE1/Ref-1 and Ape2 in humans, Apn1 and Apn2 in bakers yeast, Nape and NExo in Neisseria meningitides, and exonuclease III (ExoIII) and endonuclease IV (EndoIV) in Escherichia coli. Usually, one of the two is the dominant AP endonuclease, the other has weak AP endonuclease activity, but exhibits strong 3'-5' exonuclease, 3'-deoxyribose phosphodiesterase, and 3'-phosphatase activities. Class II AP endonucleases have been classified into two families, designated ExoIII and EndoIV, based on their homology to the Escherichia coli enzymes. This family contains the ExoIII family; the EndoIV family belongs to a different superfamily.


Pssm-ID: 197307 [Multi-domain]  Cd Length: 251  Bit Score: 234.10  E-value: 3.82e-77
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   5 RLASWNVNSLKVRLP-QVLDWLESAKIDALVMQETKTTDDVFPQTAFAEAGFDVFFLGQ--KTYNGVALCSRQTTVktsD 81
Cdd:cd09073     1 KIISWNVNGLRARLKkGVLKWLKEEKPDILCLQETKADEDKLPEELQHVEGYHSYWSPArkKGYSGVATLSKEEPL---D 77
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  82 VVLGLPG-WPDPQKRFISAllsplaapEQPPIRFCGGYFPNGQAvGSSKYLYKLDWIAVLERTLKTYLADTPRLVLGGDF 160
Cdd:cd09073    78 VSYGIGGeEFDSEGRVITA--------EFDDFYLINVYFPNGGR-GLERLDYKLRFYEAFLEFLEKLRKRGKPVVICGDF 148
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 161 NIAPADADVWNPEAWRGKILCSEPERKALERLFALGLYDSFRLFTQPAERFSWWDYRQSGFERNHGLRIDLLLVSEALKG 240
Cdd:cd09073   149 NVAHEEIDLARPKKNEKNAGFTPEERAWFDKLLSLGYVDTFRHFHPEPGAYTWWSYRGNARERNVGWRIDYFLVSEELAE 228
                         250       260
                  ....*....|....*....|....*..
gi 1821496527 241 AVESASIDDgprgNPQPSDHAPVMLDL 267
Cdd:cd09073   229 KVKDSGILS----KVKGSDHAPVTLEL 251
PRK11756 PRK11756
exonuclease III; Provisional
8-269 1.68e-62

exonuclease III; Provisional


Pssm-ID: 236970 [Multi-domain]  Cd Length: 268  Bit Score: 197.42  E-value: 1.68e-62
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   8 SWNVNSLKVRLPQVLDWLESAKIDALVMQETKTTDDVFPQTAFAEAGFDVFFLGQKTYNGVALCSRQTTVKtsdVVLGLP 87
Cdd:PRK11756    5 SFNINGLRARPHQLEAIIEKHQPDVIGLQETKVHDEMFPLEEVEALGYHVFYHGQKGHYGVALLSKQTPIA---VRKGFP 81
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  88 GWP-DPQKRFISALLsplaAPEQPPIRFCGGYFPNGQAVG-SSKYLYKLDWIAVLERTLKTYLADTPRLVLGGDFNIAPA 165
Cdd:PRK11756   82 TDDeEAQRRIIMATI----PTPNGNLTVINGYFPQGESRDhPTKFPAKRQFYQDLQNYLETELSPDNPLLIMGDMNISPT 157
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 166 DADVW----NPEAW--RGKilCS-EP-ERKALERLFALGLYDSFR-LFTQPAERFSWWDYRQSGFERNHGLRIDLLLVSE 236
Cdd:PRK11756  158 DLDIGigeeNRKRWlrTGK--CSfLPeEREWLDRLMDWGLVDTFRqLNPDVNDRFSWFDYRSKGFDDNRGLRIDLILATQ 235
                         250       260       270
                  ....*....|....*....|....*....|...
gi 1821496527 237 ALKGAVESASIDDGPRGNPQPSDHAPVMLDLSL 269
Cdd:PRK11756  236 PLAERCVETGIDYDIRGMEKPSDHAPIWATFKL 268
Mth212-like_AP-endo cd09085
Methanothermobacter thermautotrophicus Mth212-like subfamily of the ExoIII family purinic ...
4-267 4.85e-48

Methanothermobacter thermautotrophicus Mth212-like subfamily of the ExoIII family purinic/apyrimidinic (AP) endonucleases; This subfamily includes the thermophilic archaeon Methanothermobacter thermautotrophicus Mth212and related proteins. These are Escherichia coli exonuclease III (ExoIII)-like AP endonucleases and they belong to the large EEP (exonuclease/endonuclease/phosphatase) superfamily that contains functionally diverse enzymes that share a common catalytic mechanism of cleaving phosphodiester bonds. AP endonucleases participate in the DNA base excision repair (BER) pathway. AP sites are one of the most common lesions in cellular DNA. During BER, the damaged DNA is first recognized by DNA glycosylase. AP endonucleases then catalyze the hydrolytic cleavage of the phosphodiester bond 5' to the AP site, and this is followed by the coordinated actions of DNA polymerase, deoxyribose phosphatase, and DNA ligase. If left unrepaired, AP sites block DNA replication, and have both mutagenic and cytotoxic effects. AP endonucleases can carry out a variety of excision and incision reactions on DNA, including 3'-5' exonuclease, 3'-deoxyribose phosphodiesterase, 3'-phosphatase, and occasionally, nonspecific DNase activities. Different AP endonuclease enzymes catalyze the different reactions with different efficiences. Mth212 is an AP endonuclease, and a DNA uridine endonuclease (U-endo) that nicks double-stranded DNA at the 5'-side of a 2'-d-uridine residue. After incision at the 5'-side of a 2'-d-uridine residue by Mth212, DNA polymerase B takes over the 3'-OH terminus and carries out repair synthesis, generating a 5'-flap structure that is resolved by a 5'-flap endonuclease. Finally, DNA ligase seals the resulting nick. This U-endo activity shares the same catalytic center as its AP-endo activity, and is absent from other AP endonuclease homologues.


Pssm-ID: 197319 [Multi-domain]  Cd Length: 252  Bit Score: 159.75  E-value: 4.85e-48
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   4 LRLASWNVNSLK-VRLPQVLDWLESAKIDALVMQETKTTDDVFPQTAFAEAGFDVFFLG--QKTYNGVALCSRqttVKTS 80
Cdd:cd09085     1 MKIISWNVNGLRaVHKKGFLDWFKEEKPDILCLQETKAQPEQLPEDLRNIEGYHSYFNSaeRKGYSGVALYSK---IEPD 77
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  81 DVVLGLpGWP--DPQKRFISAllsplaapEQPPIRFCGGYFPNGQAvGSSKYLYKLDWIAVLERTLKTYLADTPRLVLGG 158
Cdd:cd09085    78 SVREGL-GVEefDNEGRILIA--------DFDDFTLFNIYFPNGQM-SEERLDYKLEFYDAFLEYLNELRDSGKNVIICG 147
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 159 DFNIAPADADVWNPEAWRGKILCSEPERKALERLFALGLYDSFRLFTQPAERFSWWDYRQSGFERNHGLRIDLLLVSEAL 238
Cdd:cd09085   148 DFNTAHKEIDLARPKENEKVSGFLPEERAWMDKFIENGYVDTFRMFNKEPGQYTWWSYRTRARERNVGWRIDYFFVNEEF 227
                         250       260
                  ....*....|....*....|....*....
gi 1821496527 239 KGAVESASIDDGPRGnpqpSDHAPVMLDL 267
Cdd:cd09085   228 KPKVKDAGILPDVMG----SDHCPVSLEL 252
Ape1-like_AP-endo cd09087
Human Ape1-like subfamily of the ExoIII family apurinic/apyrimidinic (AP) endonucleases; This ...
4-267 4.15e-34

Human Ape1-like subfamily of the ExoIII family apurinic/apyrimidinic (AP) endonucleases; This subfamily includes human Ape1 (also known as Apex, Hap1, or Ref-1) and related proteins. These are Escherichia coli exonuclease III (ExoIII)-like AP endonucleases and they belong to the large EEP (exonuclease/endonuclease/phosphatase) superfamily that contains functionally diverse enzymes that share a common catalytic mechanism of cleaving phosphodiester bonds. AP endonucleases participate in the DNA base excision repair (BER) pathway. AP sites are one of the most common lesions in cellular DNA. During BER, the damaged DNA is first recognized by DNA glycosylase. AP endonucleases then catalyze the hydrolytic cleavage of the phosphodiester bond 5' to the AP site, and this is followed by the coordinated actions of DNA polymerase, deoxyribose phosphatase, and DNA ligase. If left unrepaired, AP sites block DNA replication, and have both mutagenic and cytotoxic effects. AP endonucleases can carry out a variety of excision and incision reactions on DNA, including 3'-5' exonuclease, 3'-deoxyribose phosphodiesterase, 3'-phosphatase, and occasionally, nonspecific DNase activities. Different AP endonuclease enzymes catalyze the different reactions with different efficiences. Many organisms have two AP endonucleases, usually one is the dominant AP endonuclease, the other has weak AP endonuclease activity; for example, Ape1 and Ape2 in humans. Ape1 is found in this subfamily, it exhibits strong AP-endonuclease activity but shows weak 3'-5' exonuclease and 3'-phosphodiesterase activities. Class II AP endonucleases have been classified into two families, designated ExoIII and EndoIV, based on their homology to the Escherichia coli enzymes exonuclease III (ExoIII) and endonuclease IV (EndoIV). This subfamily belongs to the ExoIII family; the EndoIV family belongs to a different superfamily.


Pssm-ID: 197321 [Multi-domain]  Cd Length: 253  Bit Score: 123.82  E-value: 4.15e-34
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   4 LRLASWNVNSLKVRLP-QVLDWLESAKIDALVMQETK-TTDDVFPQTAFAEAGFDVFF--LGQKTYNGVALCSRQTTVKt 79
Cdd:cd09087     1 LKIISWNVNGLRALLKkGLLDYVKKEDPDILCLQETKlQEGDVPKELKELLKGYHQYWnaAEKKGYSGTAILSKKKPLS- 79
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  80 sdVVLGLPG-WPDPQKRFISAllsplaapEQPPIRFCGGYFPNGQAvGSSKYLYKLDWiavlERTLKTYLA---DTPRLV 155
Cdd:cd09087    80 --VTYGIGIeEHDQEGRVITA--------EFENFYLVNTYVPNSGR-GLERLDRRKEW----DVDFRAYLKkldSKKPVI 144
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 156 LGGDFNIAPADADVWNPEAWRGKILCSEPERKALERLFALGLYDSFRLFTQPAER-FSWWDYRQSGFERNHGLRIDLLLV 234
Cdd:cd09087   145 WCGDLNVAHEEIDLANPKTNKKSAGFTPEERESFTELLEAGFVDTFRHLHPDKEGaYTFWSYRGNARAKNVGWRLDYFLV 224
                         250       260       270
                  ....*....|....*....|....*....|...
gi 1821496527 235 SEALKGAVESASIddgpRGNPQPSDHAPVMLDL 267
Cdd:cd09087   225 SERLKDRVVDSFI----RSDIMGSDHCPIGLEL 253
Nape_like_AP-endo cd10281
Neisseria meningitides Nape-like subfamily of the ExoIII family purinic/apyrimidinic (AP) ...
4-266 3.62e-32

Neisseria meningitides Nape-like subfamily of the ExoIII family purinic/apyrimidinic (AP) endonucleases; This subfamily includes Neisseria meningitides Nape and related proteins. These are Escherichia coli exonuclease III (ExoIII)-like AP endonucleases and belong to the large EEP (exonuclease/endonuclease/phosphatase) superfamily that contains functionally diverse enzymes that share a common catalytic mechanism of cleaving phosphodiester bonds. AP endonucleases participate in the DNA base excision repair (BER) pathway. AP sites are one of the most common lesions in cellular DNA. During BER the damaged DNA is first recognized by DNA glycosylase. AP endonucleases then catalyze the hydrolytic cleavage of the phosphodiester bond 5' to the AP site, and this is followed by the coordinated actions of DNA polymerase, deoxyribose phosphatase, and DNA ligase. If left unrepaired, AP sites block DNA replication, and have both mutagenic and cytotoxic effects. AP endonucleases can carry out a variety of excision and incision reactions on DNA, including 3'-5' exonuclease, 3'-deoxyribose phosphodiesterase, 3'-phosphatase, and occasionally, nonspecific DNase activities. Different AP endonuclease enzymes catalyze the different reactions with different efficiences. Many organisms have two AP endonucleases, usually one is the dominant AP endonuclease, the other has weak AP endonuclease activity; for example, Neisseria meningitides Nape and NExo. Nape, found in this subfamily, is the dominant AP endonuclease. It exhibits strong AP endonuclease activity, and also exhibits 3'-5'exonuclease and 3'-deoxyribose phosphodiesterase activities.


Pssm-ID: 197336 [Multi-domain]  Cd Length: 253  Bit Score: 118.48  E-value: 3.62e-32
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   4 LRLASWNVNSLKVRLPQ-VLDWLESAKIDALVMQETKTTDDVFPQTAFAEAGFDVFFL--GQKTYNGVALCSRQttvKTS 80
Cdd:cd10281     1 MRVISVNVNGIRAAAKKgFLEWLAAQDADVVCLQEVRAQEEQLDDDFFEPEGYNAYFFdaEKKGYAGVAIYSRT---QPK 77
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  81 DVVLGLpGWP--DPQKRFISALLSPLAapeqppIRFCggYFPNGQAvGSSKYLYKldwIAVLERtLKTYLADTPR----L 154
Cdd:cd10281    78 AVIYGL-GFEefDDEGRYIEADFDNVS------VASL--YVPSGSS-GDERQEAK---MAFLDA-FLEHLKELRRkrreF 143
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 155 VLGGDFNIAPADADVWNPEAWRGKILCSEPERKALERLF-ALGLYDSFRLFTQPAERFSWWDYRQSGFERNHGLRIDLLL 233
Cdd:cd10281   144 IVCGDFNIAHTEIDIKNWKANQKNSGFLPEERAWLDQVFgELGYVDAFRELNPDEGQYTWWSNRGQARANNVGWRIDYQI 223
                         250       260       270
                  ....*....|....*....|....*....|...
gi 1821496527 234 VSEALKGAVESASIDDGPRGnpqpSDHAPVMLD 266
Cdd:cd10281   224 ATPGLASKVVSAWIYREERF----SDHAPLIVD 252
PRK13911 PRK13911
exodeoxyribonuclease III; Provisional
4-267 3.11e-23

exodeoxyribonuclease III; Provisional


Pssm-ID: 139971 [Multi-domain]  Cd Length: 250  Bit Score: 95.15  E-value: 3.11e-23
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   4 LRLASWNVNSLKVRLPQ-VLDWLESAKIDALVMQETKTTDDvfpQTAFAEAGFDVFF--LGQKTYNGVALCSRQTTVKTS 80
Cdd:PRK13911    1 MKLISWNVNGLRACMTKgFMDFFNSVDADVFCIQESKMQQE---QNTFEFKGYFDFWncAIKKGYSGVVTFTKKEPLSVS 77
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  81 dvvLGLPGWP-DPQKRFISAllsplaapEQPPIRFCGGYFPNGQAvGSSKYLYKLDWIAVLERTLKTYLADTPrLVLGGD 159
Cdd:PRK13911   78 ---YGINIEEhDKEGRVITC--------EFESFYLVNVYTPNSQQ-ALSRLSYRMSWEVEFKKFLKALELKKP-VIVCGD 144
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 160 FNIAPADADVWNPEAWRGKILCSEPERKALERLFALGLYDSFRLFTQPAER-FSWWDYRQSGFERNHGLRIDLLLVSEAL 238
Cdd:PRK13911  145 LNVAHNEIDLENPKTNRKNAGFSDEERGKFSELLNAGFIDTFRYFYPNKEKaYTWWSYMQQARDKNIGWRIDYFLCSNPL 224
                         250       260
                  ....*....|....*....|....*....
gi 1821496527 239 KGAVESASIDDGPRGnpqpSDHAPVMLDL 267
Cdd:PRK13911  225 KTRLKDALIYKDILG----SDHCPVGLEL 249
Ape2-like_AP-endo cd09088
Human Ape2-like subfamily of the ExoIII family purinic/apyrimidinic (AP) endonucleases; This ...
5-267 6.51e-22

Human Ape2-like subfamily of the ExoIII family purinic/apyrimidinic (AP) endonucleases; This subfamily includes human APE2, Saccharomyces cerevisiae Apn2/Eth1, and related proteins. These are Escherichia coli exonuclease III (ExoIII)-like AP endonucleases and they belong to the large EEP (exonuclease/endonuclease/phosphatase) superfamily that contains functionally diverse enzymes that share a common catalytic mechanism of cleaving phosphodiester bonds. AP endonucleases participate in the DNA base excision repair (BER) pathway. AP sites are one of the most common lesions in cellular DNA. During BER, the damaged DNA is first recognized by DNA glycosylase. AP endonucleases then catalyze the hydrolytic cleavage of the phosphodiester bond 5' to the AP site, and this is followed by the coordinated actions of DNA polymerase, deoxyribose phosphatase, and DNA ligase. If left unrepaired, AP sites block DNA replication, and have both mutagenic and cytotoxic effects. AP endonucleases can carry out a variety of excision and incision reactions on DNA, including 3'-5' exonuclease, 3'-deoxyribose phosphodiesterase, 3'-phosphatase, and occasionally, nonspecific DNase activities. Different AP endonuclease enzymes catalyze the different reactions with different efficiences. Many organisms have two AP endonucleases, usually one is the dominant AP endonuclease, the other has weak AP endonuclease activity. For examples, Ape1 and Ape2 in humans, and Apn1 and Apn2 in bakers yeast. Ape2 and Apn2/Eth1 are both found in this subfamily, and have the weaker AP endonuclease activity. Ape2 shows strong 3'-5' exonuclease and 3'-phosphodiesterase activities; it can reduce the mutagenic consequences of attack by reactive oxygen species by removing 3'-end adenine opposite from 8-oxoG, in addition to repairing 3'-damaged termini. Apn2/Eth1 exhibits AP endonuclease activity, but has 30-40 fold more active 3'-phosphodiesterase and 3'-5' exonuclease activities. Class II AP endonucleases have been classified into two families, designated ExoIII and EndoIV, based on their homology to the Escherichia coli enzymes exonuclease III (ExoIII) and endonuclease IV (EndoIV). This subfamily belongs to the ExoIII family; the EndoIV family belongs to a different superfamily.


Pssm-ID: 197322 [Multi-domain]  Cd Length: 309  Bit Score: 92.38  E-value: 6.51e-22
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   5 RLASWNVNSLKVRL--------PQVLDWLESAKIDALVMQETKTTDDVFPQTAFAEAGFDVFF---LGQKTYNGVAlcsr 73
Cdd:cd09088     1 RIVTWNVNGIRTRLqyqpwnkeNSLKSFLDSLDADIICLQETKLTRDELDEPSAIVEGYDSFFsfsRGRKGYSGVA---- 76
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  74 qTTVKTSDVVL-----GLPG-------------------WPDPQKRFISALLSPLAAP------EQPPIRFCGGYFPNGQ 123
Cdd:cd09088    77 -TYCRDSAATPvaaeeGLTGvlsspnqknelsenddigcYGEMLEFTDSKELLELDSEgrcvltDHGTFVLINVYCPRAD 155
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 124 AVGSSKYLYKLDWIAVLERTLKTYLADTPRLVLGGDFNIAPADADVWNPEAWRGK---ILCSEPERKALERLFALG---- 196
Cdd:cd09088   156 PEKEERLEFKLDFYRLLEERVEALLKAGRRVILVGDVNVSHRPIDHCDPDDSEDFggeSFEDNPSRQWLDQLLGDSgegg 235
                         250       260       270       280       290       300       310
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1821496527 197 ------LYDSFRLFtQPAER--FSWWDYRQSGFERNHGLRIDLLLVSEALKGAVESASIDDGPRGnpqpSDHAPVMLDL 267
Cdd:cd09088   236 gspgglLIDSFRYF-HPTRKgaYTCWNTLTGARPTNYGTRIDYILADRGLLPWVKAADILPEVEG----SDHCPVYADL 309
L1-EN cd09076
Endonuclease domain (L1-EN) of the non-LTR retrotransposon LINE-1 (L1), and related domains; ...
6-267 1.73e-16

Endonuclease domain (L1-EN) of the non-LTR retrotransposon LINE-1 (L1), and related domains; This family contains the endonuclease domain (L1-EN) of the non-LTR retrotransposon LINE-1 (L1), and related domains, including the endonuclease of Xenopus laevis Tx1. These retrotranspons belong to the subtype 2, L1-clade. LINES can be classified into two subtypes. Subtype 2 has two ORFs: the second (ORF2) encodes a modular protein consisting of an N-terminal apurine/apyrimidine endonuclease domain (EN), a central reverse transcriptase, and a zinc-finger-like domain at the C-terminus. LINE-1/L1 elements (full length and truncated) comprise about 17% of the human genome. This endonuclease nicks the genomic DNA at the consensus target sequence 5'TTTT-AA3' producing a ribose 3'-hydroxyl end as a primer for reverse transcription of associated template RNA. This subgroup also includes the endonuclease of Xenopus laevis Tx1, another member of the L1-clade. This family belongs to the large EEP (exonuclease/endonuclease/phosphatase) superfamily that contains functionally diverse enzymes that share a common catalytic mechanism of cleaving phosphodiester bonds.


Pssm-ID: 197310 [Multi-domain]  Cd Length: 236  Bit Score: 76.24  E-value: 1.73e-16
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   6 LASWNVNSL--KVRLPQVLDWLESAKIDALVMQETKTTDDVfPQTAFAEAGFDVFFLGQKTY-NGVA-LCSRQTTVKTsd 81
Cdd:cd09076     1 IGTLNVRGLrsPGKRAQLLEELKRKKLDILGLQETHWTGEG-ELKKKREGGTILYSGSDSGKsRGVAiLLSKTAANKL-- 77
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  82 vvlgLPGWPDPQKRFISALLSplaaPEQPPIRFCGGYFPNGQAVGSSKYLYKldwiavlerTLKTYLADTPR---LVLGG 158
Cdd:cd09076    78 ----LEYTKVVSGRIIMVRFK----IKGKRLTIINVYAPTARDEEEKEEFYD---------QLQDVLDKVPRhdtLIIGG 140
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 159 DFNiAPADADVWNPEaWRGKILcSEPERKALERLFALGLYDSFRLFTQPAERFSWwdyRQSGfeRNHGLRIDLLLVSEAL 238
Cdd:cd09076   141 DFN-AVLGPKDDGRK-GLDKRN-ENGERALSALIEEHDLVDVWRENNPKTREYTW---RSPD--HGSRSRIDRILVSKRL 212
                         250       260
                  ....*....|....*....|....*....
gi 1821496527 239 KGAVESASIDDGPrgnpqPSDHAPVMLDL 267
Cdd:cd09076   213 RVKVKKTKITPGA-----GSDHRLVTLKL 236
EEP cd08372
Exonuclease-Endonuclease-Phosphatase (EEP) domain superfamily; This large superfamily includes ...
6-267 9.24e-13

Exonuclease-Endonuclease-Phosphatase (EEP) domain superfamily; This large superfamily includes the catalytic domain (exonuclease/endonuclease/phosphatase or EEP domain) of a diverse set of proteins including the ExoIII family of apurinic/apyrimidinic (AP) endonucleases, inositol polyphosphate 5-phosphatases (INPP5), neutral sphingomyelinases (nSMases), deadenylases (such as the vertebrate circadian-clock regulated nocturnin), bacterial cytolethal distending toxin B (CdtB), deoxyribonuclease 1 (DNase1), the endonuclease domain of the non-LTR retrotransposon LINE-1, and related domains. These diverse enzymes share a common catalytic mechanism of cleaving phosphodiester bonds; their substrates range from nucleic acids to phospholipids and perhaps proteins.


Pssm-ID: 197306 [Multi-domain]  Cd Length: 241  Bit Score: 65.97  E-value: 9.24e-13
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   6 LASWNVNSLK--VRLPQVLDWLESAKIDALVMQETKTTDDVFPQTAFA-EAGFDVFFLG---QKTYNGVALCSRQTTVKT 79
Cdd:cd08372     1 VASYNVNGLNaaTRASGIARWVRELDPDIVCLQEVKDSQYSAVALNQLlPEGYHQYQSGpsrKEGYEGVAILSKTPKFKI 80
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  80 SDVVLGLPGWPDPQ-KRFISALLSPlaapEQPPIRFCGGYFPNGQAVGSskylYKLDWI-AVLERTLKTYLADTPRLVLG 157
Cdd:cd08372    81 VEKHQYKFGEGDSGeRRAVVVKFDV----HDKELCVVNAHLQAGGTRAD----VRDAQLkEVLEFLKRLRQPNSAPVVIC 152
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 158 GDFNIAPADADVWNPEAWrgkilcseperkaLERLFALGLYDSFRLFTQPAerfSWWdyrqsGFERNHGLRIDLLLVSEA 237
Cdd:cd08372   153 GDFNVRPSEVDSENPSSM-------------LRLFVALNLVDSFETLPHAY---TFD-----TYMHNVKSRLDYIFVSKS 211
                         250       260       270
                  ....*....|....*....|....*....|
gi 1821496527 238 LKGAVESASIDDGPRGNPQPSDHAPVMLDL 267
Cdd:cd08372   212 LLPSVKSSKILSDAARARIPSDHYPIEVTL 241
Exo_endo_phos pfam03372
Endonuclease/Exonuclease/phosphatase family; This large family of proteins includes magnesium ...
7-162 7.21e-11

Endonuclease/Exonuclease/phosphatase family; This large family of proteins includes magnesium dependent endonucleases and a large number of phosphatases involved in intracellular signalling. This family includes: AP endonuclease proteins EC:4.2.99.18, DNase I proteins EC:3.1.21.1, Synaptojanin an inositol-1,4,5-trisphosphate phosphatase EC:3.1.3.56, Sphingomyelinase EC:3.1.4.12 and Nocturnin.


Pssm-ID: 460902 [Multi-domain]  Cd Length: 183  Bit Score: 59.93  E-value: 7.21e-11
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   7 ASWNVNSL-------KVRLPQVLDWLESAKIDALVMQETKTTDDVFPQTAFAEAGFDVFFL---GQKTYNGVALCSRQTT 76
Cdd:pfam03372   1 LTWNVNGGnadaagdDRKLDALAALIRAYDPDVVALQETDDDDASRLLLALLAYGGFLSYGgpgGGGGGGGVAILSRYPL 80
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  77 VKTSDVVLGLPGWPDpqkrfisalLSPLAAPEQPPIRFCGGYFPNgqAVGSSKYLYKLDWIAVLERTLKTYLADTPRLVL 156
Cdd:pfam03372  81 SSVILVDLGEFGDPA---------LRGAIAPFAGVLVVPLVLTLA--PHASPRLARDEQRADLLLLLLALLAPRSEPVIL 149

                  ....*.
gi 1821496527 157 GGDFNI 162
Cdd:pfam03372 150 AGDFNA 155
EEP-1 cd09083
Exonuclease-Endonuclease-Phosphatase domain; uncharacterized family 1; This family of ...
139-267 2.74e-08

Exonuclease-Endonuclease-Phosphatase domain; uncharacterized family 1; This family of uncharacterized proteins belongs to a superfamily that includes the catalytic domain (exonuclease/endonuclease/phosphatase, EEP, domain) of a diverse set of proteins including the ExoIII family of apurinic/apyrimidinic (AP) endonucleases, inositol polyphosphate 5-phosphatases (INPP5), neutral sphingomyelinases (nSMases), deadenylases (such as the vertebrate circadian-clock regulated nocturnin), bacterial cytolethal distending toxin B (CdtB), deoxyribonuclease 1 (DNase1), the endonuclease domain of the non-LTR retrotransposon LINE-1, and related domains. These diverse enzymes share a common catalytic mechanism of cleaving phosphodiester bonds. Their substrates range from nucleic acids to phospholipids and perhaps, proteins.


Pssm-ID: 197317 [Multi-domain]  Cd Length: 252  Bit Score: 53.37  E-value: 2.74e-08
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 139 VLERtLKTYLADTPrLVLGGDFNiapadadvwnpeawrgkilcSEPERKALERLFALGLYDSFRLFTQPAERFsWWDYrq 218
Cdd:cd09083   150 ILER-IKEIAGDLP-VILTGDFN--------------------AEPDSEPYKTLTSGGLKDARDTAATTDGGP-EGTF-- 204
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|
gi 1821496527 219 SGFER-NHGLRIDLLLVSEALKgaVESASIDDGPRGNPQPSDHAPVMLDL 267
Cdd:cd09083   205 HGFKGpPGGSRIDYIFVSPGVK--VLSYEILTDRYDGRYPSDHFPVVADL 252
YafD COG3021
Uncharacterized conserved protein YafD, endonuclease/exonuclease/phosphatase (EEP) superfamily ...
3-269 9.29e-06

Uncharacterized conserved protein YafD, endonuclease/exonuclease/phosphatase (EEP) superfamily [General function prediction only];


Pssm-ID: 442257 [Multi-domain]  Cd Length: 310  Bit Score: 46.14  E-value: 9.29e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   3 RLRLASWNVNSLKVRLPQVLDWLESAKIDALVMQETktTDDVFPQTAFAEAGFD-VFFLGQKTYNGVALCSRQTTVKTSD 81
Cdd:COG3021    94 DLRVLTANVLFGNADAEALAALVREEDPDVLVLQET--TPAWEEALAALEADYPyRVLCPLDNAYGMALLSRLPLTEAEV 171
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  82 VVLGLPGWPdpqkrFISALLSPlaapEQPPIRFCGGYFPngqavgsSKYLYKLDWIAVLERTLKTYLADTPRLVLGGDFN 161
Cdd:COG3021   172 VYLVGDDIP-----SIRATVEL----PGGPVRLVAVHPA-------PPVGGSAERDAELAALAKAVAALDGPVIVAGDFN 235
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 162 IAPadadvWNPeawrgkilcseperkALERLFAL-GLYDSFR----LFTQPAERFSWwdyrqsgfernhGLRIDLLLVSE 236
Cdd:COG3021   236 ATP-----WSP---------------TLRRLLRAsGLRDARAgrglGPTWPANLPFL------------RLPIDHVLVSR 283
                         250       260       270
                  ....*....|....*....|....*....|...
gi 1821496527 237 ALkgAVESASIDDGPRgnpqpSDHAPVMLDLSL 269
Cdd:COG3021   284 GL--TVVDVRVLPVIG-----SDHRPLLAELAL 309
ElsH COG3568
Metal-dependent hydrolase, endonuclease/exonuclease/phosphatase family [General function ...
1-269 6.93e-04

Metal-dependent hydrolase, endonuclease/exonuclease/phosphatase family [General function prediction only];


Pssm-ID: 442789 [Multi-domain]  Cd Length: 167  Bit Score: 39.51  E-value: 6.93e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527   1 MSRLRLASWNVNSL-----KVRLPQVLDWLESAKIDALVMQEtkttddvfpqtafaeagfdvfflgqktyngVALCSRQT 75
Cdd:COG3568     5 AATLRVMTYNIRYGlgtdgRADLERIARVIRALDPDVVALQE------------------------------NAILSRYP 54
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527  76 TVKTSDVVLGLPGWpdpQKRfiSALLSPLAAPEQPpIRFCGGYFpngqavGSSKYLYKLDWIAVLERTLKTYLADTPrLV 155
Cdd:COG3568    55 IVSSGTFDLPDPGG---EPR--GALWADVDVPGKP-LRVVNTHL------DLRSAAARRRQARALAELLAELPAGAP-VI 121
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 156 LGGDFNIapadadvwnpeawrgkilcseperkalerlfalglydsfrlftqpaerfswwdyrqsgfernhglrIDLLLVS 235
Cdd:COG3568   122 LAGDFND------------------------------------------------------------------IDYILVS 135
                         250       260       270
                  ....*....|....*....|....*....|....
gi 1821496527 236 EALKgaVESASIDDGPRGnPQPSDHAPVMLDLSL 269
Cdd:COG3568   136 PGLR--VLSAEVLDSPLG-RAASDHLPVVADLEL 166
COG2374 COG2374
Predicted extracellular nuclease [General function prediction only];
135-269 4.09e-03

Predicted extracellular nuclease [General function prediction only];


Pssm-ID: 441941 [Multi-domain]  Cd Length: 362  Bit Score: 38.08  E-value: 4.09e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1821496527 135 DWIAvlerTLKTYLADTPRLVLGgDFNiapadadvwnpeawrgkilcSEPERKALERLF-ALGLYDSFRLFtQPAERFSW 213
Cdd:COG2374   242 AFVD----SLLAADPDAPVIVLG-DFN--------------------DYPFEDPLRALLgAGGLTNLAEKL-PAAERYSY 295
                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1821496527 214 WdyrqsgFERNHGLrIDLLLVSEALKGAVESASI-------------DDGPRGNPQP---SDHAPVMLDLSL 269
Cdd:COG2374   296 V------YDGNSGL-LDHILVSPALAARVTGADIwhinadiynddfkPDFRTYADDPgraSDHDPVVVGLRL 360
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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