Annotations: 4X8K

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Sigma70_r2_2	e4x8kA1	A: alpha complex topology	X: Sigma2 domain-like	H: Sigma2 domain of RNA polymerase sigma factors (From Topology)	T: Sigma2 domain of RNA polymerase sigma factors	F: Sigma70_r2_2	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B	PF13397	RNA polymerase-binding protein (RbpA)	RNA polymerase-binding protein	-	Family
A	PF00140	Sigma-70 factor, region 1.2 (Sigma70_r1_2)	Sigma-70 factor, region 1.2	-	Family
A	PF04542	Sigma-70 region 2 (Sigma70_r2)	Sigma-70 region 2	Region 2 of sigma-70 is the most conserved region of the entire protein. All members of this class of sigma-factor contain region 2. The high conservation is due to region 2 containing both the -10 promoter recognition helix and the primary core RNA ...	Region 2 of sigma-70 is the most conserved region of the entire protein. All members of this class of sigma-factor contain region 2. The high conservation is due to region 2 containing both the -10 promoter recognition helix and the primary core RNA polymerase binding determinant. The core binding helix, interacts with the clamp domain of the largest polymerase subunit, beta prime [1,2]. The aromatic residues of the recognition helix, found at the C-terminus of this domain are though to mediate strand separation, thereby allowing transcription initiation [1,2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	RNA polymerase-binding protein RbpA	binding organic cyclic compound binding nucleic acid binding basal transcription machinery binding protein binding bacterial-type RNA polymerase holo enzyme binding RNA polymerase binding bacterial-type RNA polymerase core enzyme binding RNA polymerase core enzyme binding enzyme binding	regulation of cellular process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process regulation of nitrogen compound metabolic process nucleobase-containing compound metabolic process positive regulation of metabolic process DNA-templated transcription regulation of RNA metabolic process heterocycle metabolic process organic substance biosynthetic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process regulation of biological process positive regulation of nucleobase-containing compound metabolic process regulation of cellular process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process regulation of nitrogen compound metabolic process nucleobase-containing compound metabolic process positive regulation of metabolic process DNA-templated transcription regulation of RNA metabolic process heterocycle metabolic process organic substance biosynthetic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process regulation of biological process positive regulation of nucleobase-containing compound metabolic process cellular metabolic process cellular nitrogen compound metabolic process primary metabolic process regulation of cellular metabolic process positive regulation of RNA metabolic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process aromatic compound biosynthetic process organic cyclic compound biosynthetic process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of metabolic process positive regulation of DNA-templated transcription cellular biosynthetic process positive regulation of biological process RNA metabolic process positive regulation of cellular metabolic process RNA biosynthetic process nucleic acid biosynthetic process organic substance metabolic process positive regulation of biosynthetic process nitrogen compound metabolic process positive regulation of cellular process regulation of RNA biosynthetic process regulation of biosynthetic process biological regulation regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process heterocycle biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of cellular biosynthetic process positive regulation of nitrogen compound metabolic process positive regulation of RNA biosynthetic process cellular process cellular aromatic compound metabolic process positive regulation of cellular biosynthetic process	cell periphery external encapsulating structure cell wall cellular anatomical entity peptidoglycan-based cell wall
A	RNA polymerase sigma factor SigA	DNA binding binding organic cyclic compound binding nucleic acid binding transcription regulator activity DNA-binding transcription factor activity sigma factor activity	response to acid chemical response to stimulus response to chemical response to oxygen-containing compound response to abiotic stimulus response to water response to inorganic substance cellular biosynthetic process RNA metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process organic substance metabolic process response to acid chemical response to stimulus response to chemical response to oxygen-containing compound response to abiotic stimulus response to water response to inorganic substance cellular biosynthetic process RNA metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process organic substance metabolic process heterocycle metabolic process organic substance biosynthetic process nitrogen compound metabolic process cellular metabolic process cellular nitrogen compound metabolic process primary metabolic process nucleobase-containing compound biosynthetic process heterocycle biosynthetic process gene expression macromolecule biosynthetic process DNA-templated transcription initiation nucleic acid metabolic process organic cyclic compound metabolic process biosynthetic process aromatic compound biosynthetic process organic cyclic compound biosynthetic process metabolic process cellular process macromolecule metabolic process cellular aromatic compound metabolic process	cell periphery plasma membrane membrane cellular anatomical entity external encapsulating structure cell wall peptidoglycan-based cell wall intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR025182	RNA polymerase-binding protein RbpA	Family
B	IPR038638	RbpA superfamily	Homologous Superfamily
A	IPR007627	RNA polymerase sigma-70 region 2	Domain
A	IPR000943	RNA polymerase sigma-70	Domain
A	IPR013325	RNA polymerase sigma factor, region 2	Homologous Superfamily
A	IPR013324	RNA polymerase sigma factor, region 3/4-like	Homologous Superfamily
A	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
A	IPR012760	RNA polymerase sigma factor RpoD, C-terminal	Domain
A	IPR014284	RNA polymerase sigma-70 like domain	Domain
A	IPR009042	RNA polymerase sigma-70 region 1.2	Domain
A	IPR007630	RNA polymerase sigma-70 region 4	Domain
A	IPR007624	RNA polymerase sigma-70 region 3	Domain
A	IPR028630	RNA polymerase sigma factor RpoD	Family

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.