CATH Classification

Domain Context

CATH Clusters

Superfamily DNA helicase RuvA subunit, C-terminal domain
Functional Family Putative e3 ubiquitin-protein ligase huwe1 isoform x2

Enzyme Information

2.3.2.26
HECT-type E3 ubiquitin transferase.
based on mapping to UniProt Q7Z6Z7
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)

Q7Z6Z7
HUWE1_HUMAN
Homo sapiens
E3 ubiquitin-protein ligase HUWE1

PDB Structure

PDB 2EKK
External Links
Method SOLUTION NMR
Organism
Primary Citation
Solution structure of RUH-074, a human UBA domain
Kitasaka, S., Ruhul Momen, A.Z.M., Hirota, H., Muto, Y., Yokoyama, S.
to be published