1DPI

STRUCTURE OF LARGE FRAGMENT OF ESCHERICHIA COLI DNA POLYMERASE I COMPLEXED WITH D/TMP

Domain Annotation: SCOP Classification SCOP Database (version: 2.0) Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species
A	d1dpia1	Alpha and beta proteins (a/b)	Ribonuclease H-like motif	Ribonuclease H-like	DnaQ-like 3'-5' exonuclease	Exonuclease domain of prokaryotic DNA polymerase	(Escherichia coli ) [TaxId: 562 ]
A	d1dpia2	Multi-domain proteins (alpha and beta)	DNA/RNA polymerases	DNA/RNA polymerases	DNA polymerase I	DNA polymerase I (Klenow fragment)	(Escherichia coli ) [TaxId: 562 ]

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Identifier	Description	Comments	Source
A	PF01612	3'-5' exonuclease (DNA_pol_A_exo1)	3'-5' exonuclease	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 ...	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
A	PF02739	5'-3' exonuclease, N-terminal resolvase-like domain (5_3_exonuc_N)	5'-3' exonuclease, N-terminal resolvase-like domain	-	Domain
A	PF01367	5'-3' exonuclease, C-terminal SAM fold (5_3_exonuc)	5'-3' exonuclease, C-terminal SAM fold	-	Domain
A	PF00476	DNA polymerase family A (DNA_pol_A)	DNA polymerase family A	-	Family

Gene Product Annotation Gene Product Annotation

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	DNA POLYMERASE I KLENOW FRAGMENT	catalytic activity nuclease activity exonuclease activity 3'-5' exonuclease activity hydrolase activity hydrolase activity, acting on ester bonds 5'-3' exonuclease activity nucleic acid binding DNA binding binding organic cyclic compound binding heterocyclic compound binding DNA-directed DNA polymerase activity transferase activity transferase activity, transferring phosphorus-containing groups nucleotidyltransferase activity DNA polymerase activity catalytic activity, acting on DNA		intracellular anatomical structure cytoplasm cellular anatomical entity cytosol

RCSB PDB is funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.