Deoxyribonuclease 1; Deoxyribonuclease 1 (DNase1, EC 3.1.21.1), also known as DNase I, is a Ca2+, Mg2+/Mn2+-dependent secretory endonuclease, first isolated from bovine pancreas extracts. It cleaves DNA preferentially at phosphodiester linkages next to a pyrimidine nucleotide, producing 5'-phosphate terminated polynucleotides with a free hydroxyl group on position 3'. It generally produces tetranucleotides. DNase1 substrates include single-stranded DNA, double-stranded DNA, and chromatin. This enzyme may be responsible for apoptotic DNA fragmentation. Other deoxyribonucleases in this subfamily include human DNL1L (human DNase I lysosomal-like, also known as DNASE1L1, Xib, and DNase X ), human DNASE1L2 (also known as DNAS1L2), and DNASE1L3 (also known as DNAS1L3, nhDNase, LS-DNase, DNase Y, and DNase gamma) . DNASE1L3 is implicated in apoptotic DNA fragmentation. DNase I is also a cytoskeletal protein which binds actin. A recombinant form of human DNase1 is used as a mucoactive therapy in patients with cystic fibrosis; it hydrolyzes the extracellular DNA in sputum and reduces its viscosity. Mutations in the gene encoding DNase1 have been associated with Systemic Lupus Erythematosus, a multifactorial autoimmune disease. This subfamily belongs to the large EEP (exonuclease/endonuclease/phosphatase) superfamily that contains functionally diverse enzymes that share a common catalytic mechanism of cleaving phosphodiester bonds.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217304836  64 GSQDVMLMGDFNAGCSYVRPSQWSSIRLWTSPTFQWLIPDSADTTATPTHCAYDRIVVAGMLLRGAVVPDSALPFNFQAA 143
Cdd:cd10282   156 REDDVILLGDFNADCSYVTSKGWKSIRLRTDSRFHWLIGDDADTTVRSTNCAYDRIVVAGSLLQSAVVPGSAGVFDFDKE 235

                          90       100
                  ....*....|....*....|.
gi 2217304836 144 YGLSDQLAQAISDHYPVEVML 164
Cdd:cd10282   236 FGLTEEEALAVSDHYPVEVEL 256

Deoxyribonuclease 1; Deoxyribonuclease 1 (DNase1, EC 3.1.21.1), also known as DNase I, is a Ca2+, Mg2+/Mn2+-dependent secretory endonuclease, first isolated from bovine pancreas extracts. It cleaves DNA preferentially at phosphodiester linkages next to a pyrimidine nucleotide, producing 5'-phosphate terminated polynucleotides with a free hydroxyl group on position 3'. It generally produces tetranucleotides. DNase1 substrates include single-stranded DNA, double-stranded DNA, and chromatin. This enzyme may be responsible for apoptotic DNA fragmentation. Other deoxyribonucleases in this subfamily include human DNL1L (human DNase I lysosomal-like, also known as DNASE1L1, Xib, and DNase X ), human DNASE1L2 (also known as DNAS1L2), and DNASE1L3 (also known as DNAS1L3, nhDNase, LS-DNase, DNase Y, and DNase gamma) . DNASE1L3 is implicated in apoptotic DNA fragmentation. DNase I is also a cytoskeletal protein which binds actin. A recombinant form of human DNase1 is used as a mucoactive therapy in patients with cystic fibrosis; it hydrolyzes the extracellular DNA in sputum and reduces its viscosity. Mutations in the gene encoding DNase1 have been associated with Systemic Lupus Erythematosus, a multifactorial autoimmune disease. This subfamily belongs to the large EEP (exonuclease/endonuclease/phosphatase) superfamily that contains functionally diverse enzymes that share a common catalytic mechanism of cleaving phosphodiester bonds.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217304836  64 GSQDVMLMGDFNAGCSYVRPSQWSSIRLWTSPTFQWLIPDSADTTATPTHCAYDRIVVAGMLLRGAVVPDSALPFNFQAA 143
Cdd:cd10282   156 REDDVILLGDFNADCSYVTSKGWKSIRLRTDSRFHWLIGDDADTTVRSTNCAYDRIVVAGSLLQSAVVPGSAGVFDFDKE 235

                          90       100
                  ....*....|....*....|.
gi 2217304836 144 YGLSDQLAQAISDHYPVEVML 164
Cdd:cd10282   236 FGLTEEEALAVSDHYPVEVEL 256

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.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217304836  67 DVMLMGDFNAGCSYVRPSQWSS-IRLWTSPTFQWLIPD--SADTTATPTH---CAYDRIVVAGMLLrgaVVPDSALPFNF 140
Cdd:cd08372   148 PVVICGDFNVRPSEVDSENPSSmLRLFVALNLVDSFETlpHAYTFDTYMHnvkSRLDYIFVSKSLL---PSVKSSKILSD 224

                          90       100
                  ....*....|....*....|....
gi 2217304836 141 QaayglsdQLAQAISDHYPVEVML 164
Cdd:cd08372   225 A-------ARARIPSDHYPIEVTL 241