CATH Classification

Domain Context

CATH Clusters

Superfamily DNA helicase RuvA subunit, C-terminal domain
Functional Family UBC1p Ubiquitin-conjugating enzyme

Enzyme Information

2.3.2.23
E2 ubiquitin-conjugating enzyme.
based on mapping to UniProt P21734
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)

P21734
UBC1_YEAST
Saccharomyces cerevisiae S288C
Ubiquitin-conjugating enzyme E2 1

PDB Structure

PDB 1TTE
External Links
Method SOLUTION NMR
Organism Escherichia
Primary Citation
Solution structure of the flexible class II ubiquitin-conjugating enzyme Ubc1 provides insights for polyubiquitin chain assembly.
Merkley, N., Shaw, G.S.
J.Biol.Chem.
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