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Crystal structure of Ubiquitin activating enzyme 1 (Uba1) in complex with the Ub E2 Ubc4, ubiquitin, and ATP/Mg
Annotation data related to this entry.
4II2
  •   Protein Family Annotation: Pfam Classification   Hide
    Chain Pfam Accession Pfam Family Identifier Pfam Description Type Comment
    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]. Source: Pfam  
    A PF00899   ThiF ThiF family Family
    A PF02134   UBACT Repeat in ubiquitin-activating (UBA) protein 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]. Source: Pfam  
    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. Source: Pfam  
    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]. Source: Pfam  
    B PF11976   Rad60-SLD Ubiquitin-2 like Rad60 SUMO-like Family
    A PF00899   ThiF ThiF family Family
    A PF02134   UBACT Repeat in ubiquitin-activating (UBA) protein Family
     
  •   Gene Product Annotation: GO Terms   Hide
    Polymer Molecular Function Biological Process Cellular Component
    Ubiquitin-activating enzyme E1 1 (4II2:A)
    • none
    Ubiquitin-60S ribosomal protein L40 (4II2:B)
    • none
    • none
    • none
    Ubiquitin-conjugating enzyme E2 4 (4II2:C)
    • none
     
  •   Structural Biology Knowledgebase Data Hide
     
 
Annotations in orange boxes have been gathered from external resources.