CATH Classification

Domain Context

CATH Clusters

Superfamily Ubiquitin Conjugating Enzyme
Functional Family ubiquitin-conjugating enzyme E2 7

Enzyme Information

2.3.2.23
E2 ubiquitin-conjugating enzyme.
based on mapping to UniProt Q9Y818
S-ubiquitinyl-[E1 ubiquitin-activating enzyme]-L-cysteine + [E2 ubiquitin-conjugating enzyme]-L-cysteine = [E1 ubiquitin-activating enzyme]-L-cysteine + S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L- cysteine.
-!- The E2 ubiquitin-conjugating enzyme acquires the activated ubquitin from the E1 ubiquitin-activating enzyme (EC 6.2.1.45) and binds it via a transthioesterification reaction to itself. -!- In the human enzyme the catalytic center is located at Cys-87 where ubiquitin is bound via its C-terminal glycine in a thioester linkage. -!- Formerly EC 6.3.2.19.

UniProtKB Entries (2)

O94609
UBA1_SCHPO
Schizosaccharomyces pombe 972h-
Ubiquitin-activating enzyme E1 1
A0A081CEG8
A0A081CEG8_PSEA2
Moesziomyces antarcticus
Ubiquitin-60S ribosomal protein L40 fusion protein

PDB Structure

PDB 5KNL
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
S. pombe Uba1-Ubc15 Structure Reveals a Novel Regulatory Mechanism of Ubiquitin E2 Activity.
Lv, Z., Rickman, K.A., Yuan, L., Williams, K., Selvam, S.P., Woosley, A.N., Howe, P.H., Ogretmen, B., Smogorzewska, A., Olsen, S.K.
Mol. Cell