Annotations: 6N9X

Structure of bacteriophage T7 lagging-strand DNA polymerase (D5A/E7A) and gp4 (helicase/primase) bound to DNA including RNA/DNA hybrid, and an incoming dTTP (LagS3)

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
G [auth H]	SCOP2B Superfamily	Ribonuclease H-like	8040253	3000143	SCOP2B (2022-06-29)
G [auth H]	SCOP2B Superfamily	Nucleotide cyclase/DNA polymerase palm domain-like	8040254	3001272	SCOP2B (2022-06-29)
G [auth H]	SCOP2B Superfamily	Nucleotide cyclase/DNA polymerase palm domain-like	8040254	3001272	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	RecA-like P-loop NTPases	8018194	3002019	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	RecA-like P-loop NTPases	8018194	3002019	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	RecA-like P-loop NTPases	8018194	3002019	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Toprim domain-like	8018199	3000737	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	RecA-like P-loop NTPases	8018194	3002019	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Toprim domain-like	8018199	3000737	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	RecA-like P-loop NTPases	8018194	3002019	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)
G [auth H]	La	e6n9xH1	A: beta barrels	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: La	ECOD (v294.2)
E	La	e6n9xE1	A: beta barrels	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: La	ECOD (v294.2)
D	La	e6n9xD1	A: beta barrels	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: La	ECOD (v294.2)
C	La	e6n9xC1	A: beta barrels	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: La	ECOD (v294.2)
B	La	e6n9xB1	A: beta barrels	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: La	ECOD (v294.2)
A	La	e6n9xA1	A: beta barrels	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: La	ECOD (v294.2)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F	PF21268	Bacteriophage T7 DNA helicase/primase, N-terminal a+b fold (Helic-prim_T7_N)	Bacteriophage T7 DNA helicase/primase, N-terminal a+b fold	Bacteriophage T7 DNA helicase/primase (also known as Gp4) is an ATP-dependent DNA helicase and primase that is essential for viral DNA replication and recombination [1-4]. Primase activity synthesises short RNA primers at the sequence 5'-GTC-3' on th ...	Bacteriophage T7 DNA helicase/primase (also known as Gp4) is an ATP-dependent DNA helicase and primase that is essential for viral DNA replication and recombination [1-4]. Primase activity synthesises short RNA primers at the sequence 5'-GTC-3' on the lagging strand that the polymerase elongates using dNTPs and providing the primase is still present. It consists of an N-terminal zinc ribbon (Pfam:PF08273) followed by a RNA Polymerase Domain that can be subdivided in an N-terminal alpha+beta structure, represented in this entry and a C-terminal TOPRIM fold (Pfam:PF13155) [1]. At the C-terminal end of the protein there is a DNA helicase domain (Pfam:PF03796).	Domain
A, B, C, D, E A, B, C, D, E, F	PF08273	Zinc-binding domain of primase-helicase (Zn_Ribbon_Prim)	Zinc-binding domain of primase-helicase		Domain
A, B, C, D, E A, B, C, D, E, F	PF03796	DnaB-like helicase C terminal domain (DnaB_C)	DnaB-like helicase C terminal domain	The hexameric helicase DnaB unwinds the DNA duplex at the Escherichia coli chromosome replication fork. Although the mechanism by which DnaB both couples ATP hydrolysis to translocation along DNA and denatures the duplex is unknown, a change in the q ...	The hexameric helicase DnaB unwinds the DNA duplex at the Escherichia coli chromosome replication fork. Although the mechanism by which DnaB both couples ATP hydrolysis to translocation along DNA and denatures the duplex is unknown, a change in the quaternary structure of the protein involving dimerisation of the N-terminal domain has been observed and may occur during the enzymatic cycle. This C-terminal domain contains an ATP-binding site and is therefore probably the site of ATP hydrolysis.	Domain
A, B, C, D, E A, B, C, D, E, F	PF01751	Toprim domain (Toprim)	Toprim domain	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
I [auth T]	Template	-	-	-
H [auth P]	Primer	-	-	-
G [auth H]	DNA-directed 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 nucleic acid binding hydrolase activity, acting on ester bonds nuclease activity 3'-5' exonuclease activity 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 nucleic acid binding hydrolase activity, acting on ester bonds nuclease activity 3'-5' exonuclease activity hydrolase activity exonuclease activity nucleoside phosphate binding nucleotide binding heterocyclic compound binding small molecule binding DNA exonuclease activity DNA nuclease activity cation binding ion binding metal ion binding	viral DNA genome replication primary metabolic process viral life cycle DNA metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process biosynthetic process viral genome replication viral process metabolic process cellular process viral DNA genome replication primary metabolic process viral life cycle DNA metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process biosynthetic process viral genome replication viral process metabolic process cellular process macromolecule metabolic process DNA biosynthetic process DNA synthesis involved in DNA replication DNA replication DNA-templated DNA replication cellular response to stimulus double-strand break repair response to stimulus cellular response to stress DNA damage response response to stress DNA repair	-
A, B, C, D, E A, B, C, D, E, F	DNA primase/helicase	nucleic acid conformation isomerase activity isomerase activity DNA helicase activity catalytic activity, acting on a nucleic acid helicase activity ATP-dependent activity ATP-dependent activity, acting on DNA catalytic activity, acting on DNA 5'-3' DNA helicase activity catalytic activity macromolecular conformation isomerase activity binding adenyl ribonucleotide binding nucleotide binding nucleic acid conformation isomerase activity isomerase activity DNA helicase activity catalytic activity, acting on a nucleic acid helicase activity ATP-dependent activity ATP-dependent activity, acting on DNA catalytic activity, acting on DNA 5'-3' DNA helicase activity catalytic activity macromolecular conformation isomerase activity binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding DNA-directed RNA polymerase activity 5'-3' RNA polymerase activity catalytic activity, acting on RNA RNA polymerase activity transferase activity nucleotidyltransferase activity transferase activity, transferring phosphorus-containing groups pyrophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides cation binding transition metal ion binding zinc ion binding metal ion binding identical protein binding protein binding DNA binding single-stranded DNA binding nucleic acid binding	viral DNA genome replication primary metabolic process viral life cycle DNA metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process biosynthetic process viral genome replication viral process metabolic process cellular process viral DNA genome replication primary metabolic process viral life cycle DNA metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process biosynthetic process viral genome replication viral process metabolic process cellular process macromolecule metabolic process DNA biosynthetic process DNA-templated DNA replication DNA replication, synthesis of primer RNA metabolic process RNA biosynthetic process DNA replication	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
G [auth H]	IPR036397	Ribonuclease H superfamily	Homologous Superfamily
G [auth H]	IPR043502	DNA/RNA polymerase superfamily	Homologous Superfamily
G [auth H]	IPR001098	DNA-directed DNA polymerase, family A, palm domain	Domain
G [auth H]	IPR034699	DNA-directed DNA polymerase T7	Family
G [auth H]	IPR002298	DNA polymerase A	Family
G [auth H]	IPR019760	DNA-directed DNA polymerase, family A, conserved site	Conserved Site
G [auth H]	IPR012337	Ribonuclease H-like superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR048774	Bacteriophage T7 DNA helicase/primase, N-terminal	Domain
A, B, C, D, E A, B, C, D, E, F	IPR007694	DNA helicase, DnaB-like, C-terminal	Domain
A, B, C, D, E A, B, C, D, E, F	IPR006171	TOPRIM domain	Domain
A, B, C, D, E A, B, C, D, E, F	IPR034154	Archaeal primase DnaG/twinkle-like, TOPRIM domain	Domain
A, B, C, D, E A, B, C, D, E, F	IPR046394	Bacteriophage T7 DNA helicase/primase	Family
A, B, C, D, E A, B, C, D, E, F	IPR027032	Twinkle-like protein	Family
A, B, C, D, E A, B, C, D, E, F	IPR013237	DNA primase/helicase Gp4, N-terminal, Bacteriophage T7-like	Domain
A, B, C, D, E A, B, C, D, E, F	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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 R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.