CATH Classification

Domain Context

CATH Clusters

Superfamily Ubiquitin Conjugating Enzyme
Functional Family Ubiquitin-conjugating enzyme 28, E2

Enzyme Information

2.3.2.23
E2 ubiquitin-conjugating enzyme.
based on mapping to UniProt P35131
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)

Q9SW27
MUB3_ARATH
Arabidopsis thaliana
Membrane-anchored ubiquitin-fold protein 3

PDB Structure

PDB 4X57
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Structure of an Arabidopsis E2 / Membrane-anchored Ubiquitin-fold ProteinComplex
Korolev, S., Koroleva, O., Lu, X., Downes, B.
To Be Published