Annotations: 3SPA

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A		e3spaA1	A: a/b three-layered sandwiches	X: Lipocalins/Streptavidin	H: RIFT-related	T: acid protease	F:	ECOD (v294.1)
A	Flu_PB2_5th	e3spaA5	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)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
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
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
B	Nonamer peptide	-	-	-
A	DNA-directed RNA polymerase, mitochondrial	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 DNA binding sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding 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 DNA binding sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding binding double-stranded DNA binding nucleic acid binding transcription regulatory region nucleic acid binding mitochondrial promoter sequence-specific DNA binding 3'-5'-RNA exonuclease activity RNA exonuclease activity, producing 5'-phosphomonoesters 3'-5' exonuclease activity RNA exonuclease activity RNA nuclease activity hydrolase activity hydrolase activity, acting on ester bonds nuclease activity exonuclease activity RNA binding	RNA metabolic process primary metabolic process mitochondrial gene expression gene expression nucleobase-containing compound biosynthetic process mitochondrial transcription macromolecule biosynthetic process nucleic acid metabolic process DNA-templated transcription initiation nucleobase-containing compound metabolic process RNA biosynthetic process DNA-templated transcription nucleic acid biosynthetic process biosynthetic process RNA metabolic process primary metabolic process mitochondrial gene expression gene expression nucleobase-containing compound biosynthetic process mitochondrial transcription macromolecule biosynthetic process nucleic acid metabolic process DNA-templated transcription initiation nucleobase-containing compound metabolic process RNA biosynthetic process DNA-templated transcription nucleic acid biosynthetic process biosynthetic process transcription initiation at mitochondrial promoter metabolic process cellular process macromolecule metabolic process mitochondrial RNA metabolic process DNA-templated DNA replication DNA metabolic process mitochondrial DNA metabolic process DNA replication mitochondrial DNA replication	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle mitochondrial protein-containing complex protein-containing complex catalytic complex transferase complex transferase complex, transferring phosphorus-containing groups RNA polymerase complex membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle mitochondrial protein-containing complex protein-containing complex catalytic complex transferase complex transferase complex, transferring phosphorus-containing groups RNA polymerase complex mitochondrial DNA-directed RNA polymerase complex DNA-directed RNA polymerase complex intracellular protein-containing complex membrane-enclosed lumen intracellular membraneless organelle nucleoid mitochondrial matrix intracellular organelle lumen organelle lumen membraneless organelle mitochondrial nucleoid

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR029262	DNA-directed RNA polymerase, N-terminal	Domain
A	IPR002092	DNA-directed RNA polymerase, phage-type	Family
A	IPR011990	Tetratricopeptide-like helical domain superfamily	Homologous Superfamily
A	IPR043502	DNA/RNA polymerase superfamily	Homologous Superfamily
A	IPR046950	DNA-directed RNA polymerase, C-terminal domain, phage-type	Domain
A	IPR037159	DNA-directed RNA polymerase, N-terminal domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: O00411	osteosarcoma ovarian cancer

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.