Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilyDnaQ-like 3'-5' exonuclease8104380 4000547 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyRibonuclease H-like8104381 3000143 SCOP2 (2022-06-29)
B [auth C]SCOP2B SuperfamilyRibonuclease H-like8104381 3000143 SCOP2B (2022-06-29)
C [auth E]SCOP2B SuperfamilyRibonuclease H-like8104381 3000143 SCOP2B (2022-06-29)
D [auth G]SCOP2B SuperfamilyRibonuclease H-like8104381 3000143 SCOP2B (2022-06-29)
E [auth I]SCOP2B SuperfamilyRibonuclease H-like8104381 3000143 SCOP2B (2022-06-29)
F [auth K]SCOP2B SuperfamilyRibonuclease H-like8104381 3000143 SCOP2B (2022-06-29)
G [auth M]SCOP2B SuperfamilyRibonuclease H-like8104381 3000143 SCOP2B (2022-06-29)
H [auth O]SCOP2B SuperfamilyRibonuclease H-like8104381 3000143 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
ADNA_pol_A_exo1e7mppA1 A: mixed a+b and a/bX: Ribonuclease H-likeH: Ribonuclease H-like (From Topology)T: Ribonuclease H-likeF: DNA_pol_A_exo1ECOD (1.6)
B [auth C]DNA_pol_A_exo1e7mppC1 A: mixed a+b and a/bX: Ribonuclease H-likeH: Ribonuclease H-like (From Topology)T: Ribonuclease H-likeF: DNA_pol_A_exo1ECOD (1.6)
C [auth E]DNA_pol_A_exo1e7mppE1 A: mixed a+b and a/bX: Ribonuclease H-likeH: Ribonuclease H-like (From Topology)T: Ribonuclease H-likeF: DNA_pol_A_exo1ECOD (1.6)
D [auth G]DNA_pol_A_exo1e7mppG1 A: mixed a+b and a/bX: Ribonuclease H-likeH: Ribonuclease H-like (From Topology)T: Ribonuclease H-likeF: DNA_pol_A_exo1ECOD (1.6)
E [auth I]DNA_pol_A_exo1e7mppI1 A: mixed a+b and a/bX: Ribonuclease H-likeH: Ribonuclease H-like (From Topology)T: Ribonuclease H-likeF: DNA_pol_A_exo1ECOD (1.6)
F [auth K]DNA_pol_A_exo1e7mppK1 A: mixed a+b and a/bX: Ribonuclease H-likeH: Ribonuclease H-like (From Topology)T: Ribonuclease H-likeF: DNA_pol_A_exo1ECOD (1.6)
G [auth M]DNA_pol_A_exo1e7mppM1 A: mixed a+b and a/bX: Ribonuclease H-likeH: Ribonuclease H-like (From Topology)T: Ribonuclease H-likeF: DNA_pol_A_exo1ECOD (1.6)
H [auth O]DNA_pol_A_exo1e7mppO1 A: mixed a+b and a/bX: Ribonuclease H-likeH: Ribonuclease H-like (From Topology)T: Ribonuclease H-likeF: DNA_pol_A_exo1ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF016123'-5' exonuclease (DNA_pol_A_exo1)3'-5' exonucleaseThis domain is responsible for the 3'-5' exonuclease proofreading activity of E. coli DNA polymerase I (polI) and other enzymes, it catalyses the hydrolysis of unpaired or mismatched nucleotides. This domain consists of the amino-terminal half of the ...This domain is responsible for the 3'-5' exonuclease proofreading activity of E. coli DNA polymerase I (polI) and other enzymes, it catalyses the hydrolysis of unpaired or mismatched nucleotides. This domain consists of the amino-terminal half of the Klenow fragment in E. coli polI it is also found in the Werner syndrome helicase (WRN), focus forming activity 1 protein (FFA-1) and ribonuclease D (RNase D). Werner syndrome is a human genetic disorder causing premature aging; the WRN protein has helicase activity in the 3'-5' direction [4,5]. The FFA-1 protein is required for formation of a replication foci and also has helicase activity; it is a homologue of the WRN protein [3]. RNase D is a 3'-5' exonuclease involved in tRNA processing. Also found in this family is the autoantigen PM/Scl thought to be involved in polymyositis-scleroderma overlap syndrome.
Domain