2O7G | pdb_00002o7g

Crystal structure of the Pribnow Box recognition region of SigC from Mycobacterium tuberculosis


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
Be2o7gB1 A: HTHX: HTHH: tetra-helical, lambda repressor-likeT: Sigma70_r4_2F:ECOD (20:10:01)
Ae2o7gA1 A: Profilin-likeX: Immunoglobulin-relatedH: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeT: ACPSF:ECOD (20:10:01)

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 -