CATH Classification
| Level | CATH Code | Description |
|---|---|---|
|
2 | Mainly Beta |
|
2.30 | Roll |
|
2.30.30 | SH3 type barrels. |
|
2.30.30.40 | SH3 Domains |
Domain Context
CATH Clusters
| Superfamily | SH3 Domains |
| Functional Family | E3 ubiquitin-protein ligase HECTD1 isoform X1 |
Enzyme Information
| 2.3.2.26 |
HECT-type E3 ubiquitin transferase.
based on mapping to UniProt Q9ULT8
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)
| Q9ULT8 |
HECD1_HUMAN
Homo sapiens
E3 ubiquitin-protein ligase HECTD1
|
PDB Structure
| PDB | 3DKM |
| External Links | |
| Method | X-RAY DIFFRACTION |
| Organism | |
| Primary Citation |
Crystal structure of the CPH domain of the E3 ubiquitin-protein ligase HECTD1.
To be Published
|