CATH Classification
| Level | CATH Code | Description |
|---|---|---|
|
3 | Alpha Beta |
|
3.30 | 2-Layer Sandwich |
|
3.30.40 | Herpes Virus-1 |
|
3.30.40.10 | Zinc/RING finger domain, C3HC4 (zinc finger) |
Domain Context
CATH Clusters
| Superfamily | Zinc/RING finger domain, C3HC4 (zinc finger) |
| Functional Family | E3 ubiquitin-protein ligase BRE1B |
Enzyme Information
| 2.3.2.27 |
RING-type E3 ubiquitin transferase.
based on mapping to UniProt Q5VTR2
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)
| Q5VTR2 |
BRE1A_HUMAN
Homo sapiens
E3 ubiquitin-protein ligase BRE1A
|
PDB Structure
| PDB | 5TRB |
| External Links | |
| Method | X-RAY DIFFRACTION |
| Organism | |
| Primary Citation |
Structure and Function of the RING Domains of RNF20 and RNF40, Dimeric E3 Ligases that Monoubiquitylate Histone H2B.
J.Mol.Biol.
|
