CATH Classification

Domain Context

CATH Clusters

Superfamily 2.60.200.20
Functional Family E3 ubiquitin-protein ligase RNF8

Enzyme Information

2.3.2.27
RING-type E3 ubiquitin transferase.
based on mapping to UniProt O76064
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.
-!- The RING domain of E3 ubiquitin transferase serves as a mediator bringing the ubiquitin-charged E2 ubiquitin-conjugating enzyme and the acceptor protein together to enable the direct transfer of ubiquitin through the formation of an isopeptide bond between the C-terminal glycine residue of ubiquitin an the epsilon-amino group of an L-lysine residue of the acceptor protein. -!- The RING-E3 domain does not form a catalytic thioester intermediate with ubiquitin (unlike the HECT domain, EC 2.3.2.26). -!- RING-type ubiquitin transferases may occur as single-chain enzymes but also in dimeric forms or in multi-subunit assemblies. -!- Formerly EC 6.3.2.19 and EC 6.3.2.21.

UniProtKB Entries (1)

O76064
RNF8_HUMAN
Homo sapiens
E3 ubiquitin-protein ligase RNF8

PDB Structure

PDB 2CSW
External Links
Method SOLUTION NMR
Organism
Primary Citation
Solution structure of the FHA domain of human ubiquitin ligase protein RNF8
Hayashi, F., Nagashima, T., Yokoyama, S.
To be Published