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 | Cysteine desulfurase IscS |
Enzyme Information
| 2.8.1.7 |
Cysteine desulfurase.
based on mapping to UniProt P0A6B9
L-cysteine + acceptor = L-alanine + S-sulfanyl-acceptor.
-!- The sulfur from free L-cysteine is first transferred to a cysteine residue in the active site, and then passed on to various other acceptors. -!- The enzyme is involved in the biosynthesis of iron-sulfur clusters, thio-nucleosides in tRNA, thiamine, biotin, lipoate and pyranopterin (molybdopterin). -!- In Azotobacter vinelandii, this sulfur provides the inorganic sulfide required for nitrogenous metallocluster formation.
|
UniProtKB Entries (1)
| P0A6B9 |
ISCS_ECO57
Escherichia coli O157:H7
Cysteine desulfurase IscS
|
PDB Structure
| PDB | 3LVJ |
| External Links | |
| Method | X-RAY DIFFRACTION |
| Organism | |
| Primary Citation |
Structural basis for Fe-S cluster assembly and tRNA thiolation mediated by IscS protein-protein interactions.
Plos Biol.
|
