Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
BPF04542e2o7gB1 A: alpha complex topologyX: Sigma2 domain-likeH: Sigma2 domain of RNA polymerase sigma factors (From Topology)T: Sigma2 domain of RNA polymerase sigma factorsF: PF04542ECOD (1.6)
APF04542e2o7gA1 A: alpha complex topologyX: Sigma2 domain-likeH: Sigma2 domain of RNA polymerase sigma factors (From Topology)T: Sigma2 domain of RNA polymerase sigma factorsF: PF04542ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
B1.10.1740.10 Mainly Alpha Orthogonal Bundle Rna Polymerase Sigma Factor Chain: ACATH (4.3.0)
A1.10.1740.10 Mainly Alpha Orthogonal Bundle Rna Polymerase Sigma Factor Chain: ACATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF04542Sigma-70 region 2 (Sigma70_r2)Sigma-70 region 2Region 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

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B
Probable RNA polymerase sigma-C factor -