Macromolecule Annotations for the Entities in PDB 1O9K

Domain Annotation: SCOP Classification SCOP Database (version: 1.75) Homepage

Protein Family Annotation Pfam Database Homepage

Chains Pfam Accession Pfam Identifier Pfam Description Type Source
B PF08934 Rb_C Rb C-terminal domain Domain The Rb C-terminal domain is required for high-affinity binding to E2F-DP complexes and for maximal repression of E2F-responsive promoters, thereby acting as a growth suppressor by blocking the G1-S transition of the cell cycle. This domain has a strand-loop-helix structure, which directly interacts with both E2F1 and DP1, followed by a tail segment that lacks regular secondary structure [1]. PFAM PF08934
A PF01858 RB_A Retinoblastoma-associated protein A domain Domain This domain has the cyclin fold [1] as predicted [2]. PFAM PF01858
B PF01857 RB_B Retinoblastoma-associated protein B domain Domain The crystal structure of the Rb pocket bound to a nine-residue E7 peptide containing the LxCxE motif, shared by other Rb-binding viral and cellular proteins, shows that the LxCxE peptide binds a highly conserved groove on the B domain [1]. The B domain has a cyclin fold. PFAM PF01857

Protein Modification Annotation

Type PDB Residue Nr. Description