Annotations: 2ATQ

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2atqa1	Alpha and beta proteins (a/b)	Ribonuclease H-like motif	Ribonuclease H-like	DnaQ-like 3'-5' exonuclease	Exonuclease domain of family B DNA polymerases	(Escherichia phage RB69 ) [TaxId: 12353 ],	SCOPe (2.08)
A	d2atqa2	Multi-domain proteins (alpha and beta)	DNA/RNA polymerases	DNA/RNA polymerases	DNA polymerase I	Family B DNA polymerase	(Escherichia phage RB69 ) [TaxId: 12353 ],	SCOPe (2.08)
B	d2atqb1	All beta proteins	OB-fold	Nucleic acid-binding proteins	Phage ssDNA-binding proteins	Gene 32 protein (gp32) core	(Escherichia phage RB69 ) [TaxId: 12353 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Ribonuclease H-like	8033947	3000143	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Nucleotide cyclase/DNA polymerase palm domain-like	8033949	3001272	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Nucleotide cyclase/DNA polymerase palm domain-like	8033949	3001272	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Nucleic acid-binding proteins	8033453	3000135	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	F_UNCLASSIFIED	e2atqA7	A: alpha bundles	X: thumb domain in bacteriophage RB69-like DNA polymerase I (From Topology)	H: thumb domain in bacteriophage RB69-like DNA polymerase I (From Topology)	T: thumb domain in bacteriophage RB69-like DNA polymerase I	F: F_UNCLASSIFIED	ECOD (1.6)
A	F_UNCLASSIFIED	e2atqA6	A: alpha bundles	X: fingers domain in bacteriophage RB69-like DNA polymerase I (From Topology)	H: fingers domain in bacteriophage RB69-like DNA polymerase I (From Topology)	T: fingers domain in bacteriophage RB69-like DNA polymerase I	F: F_UNCLASSIFIED	ECOD (1.6)
A	PF00136	e2atqA5	A: a+b two layers	X: Alpha-beta plaits	H: Adenylyl and guanylyl cyclase catalytic domain-like	T: Adenylyl and guanylyl cyclase catalytic domain-like	F: PF00136	ECOD (1.6)
A	PF03104	e2atqA4	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: PF03104	ECOD (1.6)
B	PF08804	e2atqB1	A: beta barrels	X: OB-fold	H: Nucleic acid-binding proteins (From Topology)	T: Nucleic acid-binding proteins	F: PF08804	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.342.10	Alpha Beta	2-Layer Sandwich	DNA Polymerase	Chain A, domain 1	CATH (4.3.0)
A	3.30.420.10	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase	domain 5	CATH (4.3.0)
A	3.90.1600.10	Alpha Beta	Alpha-Beta Complex	Palm domain of DNA polymerase	B family DNA polymerase, palm domain	CATH (4.3.0)
A	1.10.287.690	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	B family DNA polymerase, finger domain	CATH (4.3.0)
A	1.20.1280.300	Mainly Alpha	Up-down Bundle	Monooxygenase		CATH (4.3.0)
B	3.90.198.10	Alpha Beta	Alpha-Beta Complex	Replication Fork Single-Stranded DNA Binding Protein	Replication Fork Single-Stranded Dna Binding Protein	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00136	DNA polymerase family B (DNA_pol_B)	DNA polymerase family B	-	Family
A	PF03104	DNA polymerase family B, exonuclease domain (DNA_pol_B_exo1)	DNA polymerase family B, exonuclease domain	-	Family
B	PF08804	gp32 DNA binding protein like (gp32)	gp32 DNA binding protein like	gp32 is a single stranded (ss) DNA binding protein in bacteriophage T4 that is essential for DNA replication, recombination and repair. The ssDNA binding cleft of gp32 comprises regions from three structural subdomains [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	DNA polymerase	catalytic activity, acting on DNA DNA-directed DNA polymerase activity DNA polymerase activity catalytic activity, acting on a nucleic acid transferase activity nucleotidyltransferase activity catalytic activity transferase activity, transferring phosphorus-containing groups DNA binding binding organic cyclic compound binding nucleic acid binding nuclease activity hydrolase activity, acting on ester bonds catalytic activity, acting on DNA DNA-directed DNA polymerase activity DNA polymerase activity catalytic activity, acting on a nucleic acid transferase activity nucleotidyltransferase activity catalytic activity transferase activity, transferring phosphorus-containing groups DNA binding binding organic cyclic compound binding nucleic acid binding nuclease activity hydrolase activity, acting on ester bonds 3'-5' exonuclease activity hydrolase activity exonuclease activity nucleoside phosphate binding nucleotide binding heterocyclic compound binding small molecule binding cation binding ion binding metal ion binding	nucleobase-containing compound metabolic process organic cyclic compound metabolic process DNA replication organic substance metabolic process metabolic process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process cellular biosynthetic process viral life cycle nucleic acid biosynthetic process organic substance biosynthetic process viral process nucleobase-containing compound metabolic process organic cyclic compound metabolic process DNA replication organic substance metabolic process metabolic process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process cellular biosynthetic process viral life cycle nucleic acid biosynthetic process organic substance biosynthetic process viral process bidirectional double-stranded viral DNA replication cellular metabolic process viral DNA genome replication nucleobase-containing compound biosynthetic process macromolecule biosynthetic process biosynthetic process viral genome replication organic cyclic compound biosynthetic process cellular process DNA biosynthetic process	-
B	gp32	cation binding ion binding binding metal ion binding small molecule binding DNA binding organic cyclic compound binding single-stranded DNA binding nucleic acid binding	cellular biosynthetic process viral life cycle nucleobase-containing compound metabolic process nucleic acid biosynthetic process organic substance metabolic process organic substance biosynthetic process viral process bidirectional double-stranded viral DNA replication cellular metabolic process viral DNA genome replication primary metabolic process DNA metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process cellular biosynthetic process viral life cycle nucleobase-containing compound metabolic process nucleic acid biosynthetic process organic substance metabolic process organic substance biosynthetic process viral process bidirectional double-stranded viral DNA replication cellular metabolic process viral DNA genome replication primary metabolic process DNA metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process organic cyclic compound metabolic process biosynthetic process viral genome replication organic cyclic compound biosynthetic process metabolic process cellular process macromolecule metabolic process DNA biosynthetic process cellular response to stimulus response to stimulus cellular response to stress DNA damage response response to stress DNA repair DNA recombination	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036397	Ribonuclease H superfamily	Homologous Superfamily
A	IPR006134	DNA-directed DNA polymerase, family B, multifunctional domain	Domain
A	IPR034749	DNA-directed DNA polymerase T4 type	Family
A	IPR006172	DNA-directed DNA polymerase, family B	Family
A	IPR043502	DNA/RNA polymerase superfamily	Homologous Superfamily
A	IPR006133	DNA-directed DNA polymerase, family B, exonuclease domain	Domain
A	IPR017964	DNA-directed DNA polymerase, family B, conserved site	Conserved Site
A	IPR012337	Ribonuclease H-like superfamily	Homologous Superfamily
A	IPR023211	DNA polymerase, palm domain superfamily	Homologous Superfamily
B	IPR044947	Bacteriophage T4, Gp32, single-stranded DNA-binding superfamily	Homologous Superfamily
B	IPR012340	Nucleic acid-binding, OB-fold	Homologous Superfamily
B	IPR046395	Bacteriophage T4, Gp32, single-stranded DNA-binding	Family
B	IPR012339	Bacteriophage T4, Gp32, single-stranded DNA-binding domain	Domain

RCSB PDB Core Operations are 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.