CATH Classification

Domain Context

CATH Clusters

Superfamily Bromodomain-like
Functional Family E3 ubiquitin-protein ligase TRIM33

Enzyme Information

2.3.2.27
RING-type E3 ubiquitin transferase.
based on mapping to UniProt O15164
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)

O15164
TIF1A_HUMAN
Homo sapiens
Transcription intermediary factor 1-alpha

PDB Structure

PDB 2YYN
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Crystal sturcture of human bromodomain protein
Kishishita, S., Uchikubo-Kamo, T., Murayama, K., Terada, T., Shirouzu, M., Yokoyama, S.
To be Published