Annotations: 1CEZ

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
C [auth A]	d1ceza_	Multi-domain proteins (alpha and beta)	DNA/RNA polymerases	DNA/RNA polymerases	T7 RNA polymerase	T7 RNA polymerase	(Escherichia phage T7 ) [TaxId: 10760 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C [auth A]	SCOP2 Family	T7 RNA polymerase	8025124	4002801	SCOP2 (2022-06-29)
C [auth A]	SCOP2 Superfamily	Nucleotide cyclase/DNA polymerase palm domain-like	8037503	3001272	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
C [auth A]	7tm_1	e1cezA1	A: a/b three-layered sandwiches	X: omega toxin-like	H: omega toxin-related	T: omega toxin-related	F: 7tm_1	ECOD (v294.1)
C [auth A]	Flu_PB2_5th	e1cezA5	A: a/b three-layered sandwiches	X: PriB N-terminal domain-like	H: ADP-ribosylation	T: ADP-ribosylation	F: Flu_PB2_5th	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth A]	1.10.1320.10	Mainly Alpha	Orthogonal Bundle	T7 RNA polymerase	domain 1	CATH (4.3.0)
C [auth A]	1.10.287.260	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
C [auth A]	3.30.70.370	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (4.3.0)
C [auth A]	1.10.287.280	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
C [auth A]	1.10.150.20	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C [auth A]	PF14700	DNA-directed RNA polymerase N-terminal (RPOL_N)	DNA-directed RNA polymerase N-terminal	This is the N-terminal domain of DNA-directed RNA polymerase. This domain has a role in interaction with regions of upstream promoter DNA and the nascent RNA chain, leading to the processivity of the enzyme [1]. In order to make mRNA transcripts the ...	This is the N-terminal domain of DNA-directed RNA polymerase. This domain has a role in interaction with regions of upstream promoter DNA and the nascent RNA chain, leading to the processivity of the enzyme [1]. In order to make mRNA transcripts the RNA polymerase undergoes a transition from the initiation phase (which only makes short fragments of RNA) to an elongation phase. This domain undergoes a structural change in the transition from initiation to elongation phase. The structural change results in abolition of the promoter binding site, creation of a channel accommodating the heteroduplex in the active site and formation of an exit tunnel which the RNA transcript passes through after peeling off the heteroduplex [2].	Domain
C [auth A]	PF00940	DNA-dependent RNA polymerase (RNA_pol)	DNA-dependent RNA polymerase	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth A]	PROTEIN (BACTERIOPHAGE T7 RNA POLYMERASE)	DNA binding binding nucleic acid binding DNA-directed RNA polymerase activity 5'-3' RNA polymerase activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA polymerase activity transferase activity nucleotidyltransferase activity catalytic activity transferase activity, transferring phosphorus-containing groups	viral gene expression DNA-templated viral transcription viral process viral transcription RNA metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process viral gene expression DNA-templated viral transcription viral process viral transcription RNA metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process biosynthetic process metabolic process cellular process macromolecule metabolic process	transferase complex, transferring phosphorus-containing groups protein-containing complex catalytic complex RNA polymerase complex DNA-directed RNA polymerase complex transferase complex intracellular protein-containing complex
B [auth N]	DNA (5'-D(PTPAPAPTPAPCPGPAPCPTPCPAPCPTP*A)-3')	-	-	-
A [auth T]	DNA (5'-D(PTPAPTPAPGPTPGPAPGPTPCPGPTPAPTPTP*A)-3')	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth A]	IPR029262	DNA-directed RNA polymerase, N-terminal	Domain
C [auth A]	IPR002092	DNA-directed RNA polymerase, phage-type	Family
C [auth A]	IPR024075	DNA-directed RNA polymerase, helix hairpin domain superfamily	Homologous Superfamily
C [auth A]	IPR046950	DNA-directed RNA polymerase, C-terminal domain, phage-type	Domain
C [auth A]	IPR043502	DNA/RNA polymerase superfamily	Homologous Superfamily
C [auth A]	IPR037159	DNA-directed RNA polymerase, N-terminal domain superfamily	Homologous Superfamily

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.