Macromolecule Annotations for the Entities in PDB 1KU2

Protein Family Annotation Pfam Database Homepage

Chains Pfam Accession Pfam Identifier Pfam Description Type Source
A PF04539 Sigma70_r3 Sigma-70 region 3 Family
A PF04542 Sigma70_r2 Sigma-70 region 2 Domain 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]. PFAM PF04542
A PF00140 Sigma70_r1_2 Sigma-70 factor, region 1.2 Family

Gene Product Annotation Gene Ontology Consortium Homepage

Protein Modification Annotation

Type PDB Residue Nr. Description