CATH Classification

Domain Context

CATH Clusters

Superfamily Regulator of chromosome condensation 1/beta-lactamase-inhibitor protein II
Functional Family LOW QUALITY PROTEIN: probable E3 ubiquitin-protein ligase HERC1

Enzyme Information

2.3.2.26
HECT-type E3 ubiquitin transferase.
based on mapping to UniProt Q15751
S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine + [acceptor protein]-L-lysine = [E2 ubiquitin-conjugating enzyme]-L-cysteine + N(6)- ubiquitinyl-[acceptor protein]-L-lysine.
-!- In the first step the enzyme transfers ubiquitin from the E2 ubiquitin-conjugating enzyme (EC 2.3.2.23) to a cysteine residue in its HECT domain (which is located in the C-terminal region), forming a thioester bond. -!- In a subsequent step the enzyme transfers the ubiquitin to an acceptor protein, resulting in the formation of an isopeptide bond between the C-terminal glycine residue of ubiquitin and the epsilon- amino group of an L-lysine residue of the acceptor protein. -!- Cf. EC 2.3.2.27 and EC 2.3.2.31.

UniProtKB Entries (1)

Q15751
HERC1_HUMAN
Homo sapiens
Probable E3 ubiquitin-protein ligase HERC1

PDB Structure

PDB 4O2W
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Crystal structure of the third RCC1-like domain of HERC1
Hu, J., Dong, A., Li, Y., Walker, J.R., Bountra, C., Arrowsmith, C.H., Edwards, A.M., Tong, Y., Structural Genomics Consortium (SGC)
To be Published
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