CATH Classification
| Level | CATH Code | Description |
|---|---|---|
|
3 | Alpha Beta |
|
3.40 | 3-Layer(aba) Sandwich |
|
3.40.640 | Aspartate Aminotransferase; domain 2 |
|
3.40.640.10 | Type I PLP-dependent aspartate aminotransferase-like (Major domain) |
Domain Context
CATH Clusters
| Superfamily | Type I PLP-dependent aspartate aminotransferase-like (Major domain) |
| Functional Family |
Enzyme Information
| 4.4.1.13 |
Cysteine-S-conjugate beta-lyase.
based on mapping to UniProt P23256
An L-cysteine-S-conjugate + H(2)O = RSH + NH(3) + pyruvate.
-!- A pyridoxal 5'-phosphate protein. -!- The enzyme is promiscuous regarding the moiety conjugated to L-cysteine, and can accept both aliphatic and aromatic substitutions. -!- The enzyme cleaves a carbon-sulfur bond, releasing a thiol and an unstable enamine product that tautomerizes to an imine form, which undergoes a hydrolytic deamination to form pyruvate and ammonia. -!- While bacteria and plants have dedicated enzymes, all of the animal enzymes discovered thus far are bifunctional, most of which also act as aminotransferases. -!- Formerly EC 4.4.1.6 and EC 4.4.1.8.
|
UniProtKB Entries (1)
| P23256 |
MALY_ECOLI
Escherichia coli K-12
Protein MalY
|
PDB Structure
| PDB | 1D2F |
| External Links | |
| Method | X-RAY DIFFRACTION |
| Organism | Escherichia |
| Primary Citation |
X-ray structure of MalY from Escherichia coli: a pyridoxal 5'-phosphate-dependent enzyme acting as a modulator in mal gene expression.
EMBO J.
|