Macromolecule Annotations for the Entities in PDB 4II2

Domain Annotation: CATH CATH Database (version 4.0.0) Homepage

Chains Domain Class Architecture Topology Homology
C 4ii2C00 Alpha Beta Roll Ubiquitin Conjugating Enzyme Ubiquitin Conjugating Enzyme

Protein Family Annotation Pfam Database Homepage

Chains Pfam Accession Pfam Identifier Pfam Description Type Source
A PF00899 ThiF ThiF family Family
A PF10585 UBA_e1_thiolCys Ubiquitin-activating enzyme active site Domain Ubiquitin-activating enzyme (E1 enzyme) activates ubiquitin by first adenylating with ATP its C-terminal glycine residue and thereafter linking this residue to the side chain of a cysteine residue in E1, yielding an ubiquitin-E1 thiolester and free AMP. Later the ubiquitin moiety is transferred to a cysteine residue on one of the many forms of ubiquitin-conjugating enzymes (E2) [1]. This domain carries the last of five conserved cysteines that is part of the active site of the enzyme, responsible for ubiquitin thiolester complex formation, the active site being represented by the sequence motif PICTLKNFP [2]. PFAM PF10585
A PF09358 UBA_e1_C Ubiquitin-activating enzyme e1 C-terminal domain Domain This presumed domain found at the C-terminus of Ubiquitin-activating enzyme e1 proteins is functionally uncharacterised. PFAM PF09358
C PF00179 UQ_con Ubiquitin-conjugating enzyme Domain Proteins destined for proteasome-mediated degradation may be ubiquitinated. Ubiquitination follows conjugation of ubiquitin to a conserved cysteine residue of UBC homologues. TSG101 is one of several UBC homologues that lacks this active site cysteine [4, 5]. PFAM PF00179
B PF00240 ubiquitin Ubiquitin family Domain This family contains a number of ubiquitin-like proteins: SUMO (smt3 homologue) (see Swiss:Q02724), Nedd8 (see Swiss:P29595), Elongin B (see Swiss:Q15370), Rub1 (see Swiss:Q9SHE7), and Parkin (see Swiss:O60260). A number of them are thought to carry a distinctive five-residue motif termed the proteasome-interacting motif (PIM), which may have a biologically significant role in protein delivery to proteasomes and recruitment of proteasomes to transcription sites [5]. PFAM PF00240
A PF00899 ThiF ThiF family Family