A0A2V1ALB8 · A0A2V1ALB8_9ASCO
- ProteinThiamine thiazole synthase
- GeneTHI4
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids331 (go to sequence)
- Protein existenceInferred from homology
- Annotation score3/5
Function
function
Involved in biosynthesis of the thiamine precursor thiazole. Catalyzes the conversion of NAD and glycine to adenosine diphosphate 5-(2-hydroxyethyl)-4-methylthiazole-2-carboxylic acid (ADT), an adenylated thiazole intermediate. The reaction includes an iron-dependent sulfide transfer from a conserved cysteine residue of the protein to a thiazole intermediate. The enzyme can only undergo a single turnover, which suggests it is a suicide enzyme. May have additional roles in adaptation to various stress conditions and in DNA damage tolerance.
Catalytic activity
- [ADP-thiazole synthase]-L-cysteine + glycine + NAD+ = [ADP-thiazole synthase]-dehydroalanine + ADP-5-ethyl-4-methylthiazole-2-carboxylate + 2 H+ + 3 H2O + nicotinamide
Cofactor
Note: Binds 1 Fe cation per subunit.
Features
Showing features for binding site.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Binding site | 79 | substrate | ||||
Sequence: A | ||||||
Binding site | 100-101 | substrate | ||||
Sequence: EA | ||||||
Binding site | 108 | substrate | ||||
Sequence: G | ||||||
Binding site | 173 | substrate | ||||
Sequence: V | ||||||
Binding site | 210 | substrate | ||||
Sequence: D | ||||||
Binding site | 225 | substrate | ||||
Sequence: H | ||||||
Binding site | 282 | substrate | ||||
Sequence: M | ||||||
Binding site | 292-294 | substrate | ||||
Sequence: RMG |
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | cytosol | |
Cellular Component | nucleus | |
Molecular Function | iron ion binding | |
Molecular Function | pentosyltransferase activity | |
Biological Process | thiamine biosynthetic process | |
Biological Process | thiazole biosynthetic process |
Keywords
- Molecular function
- Biological process
- Ligand
Names & Taxonomy
Protein names
- Recommended nameThiamine thiazole synthase
- Alternative names
Gene names
Organism names
- Organism
- Strain
- Taxonomic lineageEukaryota > Fungi > Dikarya > Ascomycota > Saccharomycotina > Saccharomycetes > Saccharomycetales > Metschnikowiaceae > Metschnikowiaceae incertae sedis > Candida/Metschnikowiaceae
Accessions
- Primary accessionA0A2V1ALB8
Proteomes
Organism-specific databases
PTM/Processing
Features
Showing features for modified residue.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Modified residue | 208 | 2,3-didehydroalanine (Cys) | ||||
Sequence: C |
Post-translational modification
During the catalytic reaction, a sulfide is transferred from Cys-208 to a reaction intermediate, generating a dehydroalanine residue.
Interaction
Subunit
Homooctamer.
Structure
Sequence
- Sequence statusComplete
- Length331
- Mass (Da)35,573
- Last updated2018-09-12 v1
- Checksum53BC6BEAA77D42B8
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
PKFP01000008 EMBL· GenBank· DDBJ | PVH18033.1 EMBL· GenBank· DDBJ | Genomic DNA |