CATH Classification

Domain Context

CATH Clusters

Superfamily Ubiquitin Conjugating Enzyme
Functional Family

Enzyme Information

2.3.2.23
E2 ubiquitin-conjugating enzyme.
based on mapping to UniProt P35129
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 (1)

P35129
UBC2_CAEEL
Caenorhabditis elegans
Ubiquitin-conjugating enzyme E2 2

PDB Structure

PDB 1Z2U
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
The 1.1A crystallographic structure of ubiquitin-conjugating enzyme (ubc-2) from Caenorhabditis elegans: functional and evolutionary significance
Gavira, J.A., DiGiamamarino, E., Tempel, W., Liu, Z.J., Wang, B.C., Meehan, E., Ng, J.D.
To be published