5YIX | pdb_00005yix

Caulobacter crescentus GcrA sigma-interacting domain (SID) in complex with domain 2 of sigma 70

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
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)
A	SCOP2 Family	Sigma2 domain of RNA polymerase sigma factors	8069326	4003741	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Sigma2 domain of RNA polymerase sigma factors	8069327	3001393	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)
A	YcaO	e5yixA1	A: a/b three-layered sandwiches	X: Periplasmic binding protein-like II	H: Rubredoxin-related	T: Tetrapyrrole methylase C-terminal domain	F: YcaO	ECOD (v294.1)
B	GcrA	e5yixB1	A: a/b three-layered sandwiches	X: HUP domain-like	H: HUP domains	T: Nucleotidyltransferase	F: GcrA	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.601.10	Mainly Alpha	Orthogonal Bundle	RNA Polymerase Primary Sigma Factor	RNA Polymerase Primary Sigma Factor	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
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
A	PF04546	Sigma-70, non-essential region (Sigma70_ner)	Sigma-70, non-essential region	The domain is found in the primary vegetative sigma factor. The function of this domain is unclear and can be removed without loss of function.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	RNA polymerase sigma factor RpoD	DNA binding binding nucleic acid binding transcription regulator activity DNA-binding transcription factor activity sigma factor activity	RNA metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process DNA-templated transcription initiation 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 RNA metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process DNA-templated transcription initiation 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	cellular anatomical structure intracellular anatomical structure cytoplasm
B	Cell cycle regulatory protein GcrA	cation binding ion binding binding metal ion binding small molecule binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR007627	RNA polymerase sigma-70 region 2	Domain
A	IPR007127	RNA polymerase sigma factor 70, region 1.1	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	IPR009042	RNA polymerase sigma-70 region 1.2	Domain
A	IPR007630	RNA polymerase sigma-70 region 4	Domain
A	IPR014284	RNA polymerase sigma-70-like domain	Domain
A	IPR007624	RNA polymerase sigma-70 region 3	Domain
A	IPR007631	RNA polymerase sigma factor 70, non-essential domain	Domain
A	IPR028630	RNA polymerase sigma factor RpoD	Family
A	IPR042189	Sigma-70 factor, region 1.1 superfamily	Homologous Superfamily
A	IPR050239	Sigma-70 factor family, RNA polymerase initiation factors	Family
B	IPR011681	GcrA cell cycle regulator	Family

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.