endonuclease/exonuclease/phosphatase (EEP) family protein is among a diverse set of enzymes that share a common catalytic mechanism of cleaving phosphodiester bonds; their substrates range from nucleic acids to phospholipids and perhaps proteins
Mycoplasma pulmonis MnuA nuclease-like; This subfamily includes Mycoplasma pulmonis MnuA, a ...
2-269
7.01e-09
Mycoplasma pulmonis MnuA nuclease-like; This subfamily includes Mycoplasma pulmonis MnuA, a membrane-associated nuclease related to Deoxyribonuclease 1 (DNase1 or DNase I, EC 3.1.21.1). The in vivo role of MnuA is as yet undetermined. 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.
Pssm-ID: 197338 [Multi-domain] Cd Length: 266 Bit Score: 55.10 E-value: 7.01e-09
Mycoplasma pulmonis MnuA nuclease-like; This subfamily includes Mycoplasma pulmonis MnuA, a ...
2-269
7.01e-09
Mycoplasma pulmonis MnuA nuclease-like; This subfamily includes Mycoplasma pulmonis MnuA, a membrane-associated nuclease related to Deoxyribonuclease 1 (DNase1 or DNase I, EC 3.1.21.1). The in vivo role of MnuA is as yet undetermined. 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.
Pssm-ID: 197338 [Multi-domain] Cd Length: 266 Bit Score: 55.10 E-value: 7.01e-09
Exonuclease-Endonuclease-Phosphatase (EEP) domain superfamily; uncharacterized family 2; This ...
2-269
8.27e-09
Exonuclease-Endonuclease-Phosphatase (EEP) domain superfamily; uncharacterized family 2; 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: 197318 [Multi-domain] Cd Length: 246 Bit Score: 54.61 E-value: 8.27e-09
Exonuclease-Endonuclease-Phosphatase (EEP) domain superfamily; This large superfamily includes ...
2-265
7.61e-08
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: 52.10 E-value: 7.61e-08
Phosphodiesterase domain of human TDP2, a 5'-tyrosyl DNA phosphodiesterase, and related ...
2-178
1.00e-06
Phosphodiesterase domain of human TDP2, a 5'-tyrosyl DNA phosphodiesterase, and related domains; Human TDP2, also known as TTRAP (TRAF/TNFR-associated factors, and tumor necrosis factor receptor/TNFR-associated protein), is a 5'-tyrosyl DNA phosphodiesterase. It is required for the efficient repair of topoisomerase II-induced DNA double strand breaks. The topoisomerase is covalently linked by a phosphotyrosyl bond to the 5'-terminus of the break. TDP2 cleaves the DNA 5'-phosphodiester bond and restores 5'-phosphate termini, needed for subsequent DNA ligation, and hence repair of the break. TDP2 and 3'-tyrosyl DNA phosphodiesterase (TDP1) are complementary activities; together, they allow cells to remove trapped topoisomerase from both 3'- and 5'-DNA termini. TTRAP has been reported as being involved in apoptosis, embryonic development, and transcriptional regulation, and it may inhibit the activation of nuclear factor-kB. 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: 197314 [Multi-domain] Cd Length: 248 Bit Score: 48.49 E-value: 1.00e-06
Exonuclease-Endonuclease-Phosphatase domain; uncharacterized family 1; This family of ...
156-269
1.94e-05
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: 44.90 E-value: 1.94e-05
Neutral sphingomyelinases (nSMase) catalyze the hydrolysis of sphingomyelin in biological ...
2-269
2.64e-05
Neutral sphingomyelinases (nSMase) catalyze the hydrolysis of sphingomyelin in biological membranes to ceramide and phosphorylcholine; Sphingomyelinases (SMase) are phosphodiesterases that catalyze the hydrolysis of sphingomyelin to ceramide and phosphorylcholine. Eukaryotic SMases have been classified according to their pH optima and are known as acid SMase, alkaline SMase, and neutral SMase (nSMase). Eukaryotic proteins in this family are nSMases, and are activated by a variety of stress-inducing agents such as cytokines or UV radiation. Ceramides and other metabolic derivatives, including sphingosine, are lipid "second messenger" molecules that participate in the regulation of stress-induced cellular responses, including cell death, adhesion, differentiation, and proliferation. Bacterial neutral SMases, which also belong to this domain family, are secreted proteins that act as membrane-damaging virulence factors. They promote colonization of the host tissue. 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: 197312 [Multi-domain] Cd Length: 280 Bit Score: 44.64 E-value: 2.64e-05
Escherichia coli exonuclease III (ExoIII) and Neisseria meningitides NExo-like subfamily of ...
155-269
9.04e-05
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: 42.89 E-value: 9.04e-05
Endonuclease domain (L1-EN) of the non-LTR retrotransposon LINE-1 (L1), and related domains; ...
142-269
8.50e-03
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: 36.56 E-value: 8.50e-03
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.
of the residues that compose this conserved feature have been mapped to the query sequence.
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