A0A8B6NHY2 · A0A8B6NHY2_9PHAE
- ProteinThiazole synthase
- GenethiG
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids269 (go to sequence)
- Protein existenceInferred from homology
- Annotation score3/5
Function
function
Catalyzes the rearrangement of 1-deoxy-D-xylulose 5-phosphate (DXP) to produce the thiazole phosphate moiety of thiamine. Sulfur is provided by the thiocarboxylate moiety of the carrier protein ThiS. In vitro, sulfur can be provided by H2S.
Catalytic activity
- 1-deoxy-D-xylulose 5-phosphate + 2-iminoacetate + [sulfur-carrier protein ThiS]-C-terminal Gly-NH-CH2-C(O)SH = 2-[(2R,5Z)-2-carboxy-4-methylthiazol-5(2H)-ylidene]ethyl phosphate + [sulfur-carrier protein ThiS]-C-terminal Gly-Gly + 2 H+ + 2 H2O
Pathway
Cofactor biosynthesis; thiamine diphosphate biosynthesis.
Features
Showing features for active site, binding site.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Active site | 107 | Schiff-base intermediate with DXP | ||||
Sequence: K | ||||||
Binding site | 168 | 1-deoxy-D-xylulose 5-phosphate (UniProtKB | ChEBI) | ||||
Sequence: G | ||||||
Binding site | 194-195 | 1-deoxy-D-xylulose 5-phosphate (UniProtKB | ChEBI) | ||||
Sequence: AG | ||||||
Binding site | 216-217 | 1-deoxy-D-xylulose 5-phosphate (UniProtKB | ChEBI) | ||||
Sequence: NS |
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | chloroplast | |
Molecular Function | sulfurtransferase activity | |
Biological Process | thiamine biosynthetic process | |
Biological Process | thiamine diphosphate biosynthetic process |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameThiazole synthase
- EC number
Gene names
Encoded on
- Chloroplast
Organism names
- Organism
- Strain
- Taxonomic lineageEukaryota > Sar > Stramenopiles > Ochrophyta > PX clade > Phaeophyceae > Fucales > Sargassaceae > Sargassum
Accessions
- Primary accessionA0A8B6NHY2
Subcellular Location
Interaction
Subunit
Homotetramer. Forms heterodimers with either ThiH or ThiS.
Structure
Family & Domains
Features
Showing features for domain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Domain | 9-259 | Thiazole synthase ThiG | ||||
Sequence: IGNKSFNSRLIIGTGKYRNLHDMTSCLEKSGAEIVTVAIRRLNLSTVTTNNLIAKINWNKLWLLPNTAGAKTTEEAIRLAFLGRELSKRLGQQENNFIKLEVISDPKYLFPDPIGTLKAAEFLIKKGFSVLPYTNTDPMLAKHLEDIGCSTIMPLGSPIGSGQGIQNIENIKIIIENSKVPVIIDAGIGSSSEATYAMELGAEAVLINSAIAQAKNSIEMATAMNLAVRAGRKAYLAGQMIPQKFAQSSSP |
Sequence similarities
Belongs to the ThiG family.
Family and domain databases
Sequence
- Sequence statusComplete
- Length269
- Mass (Da)29,288
- Last updated2021-09-29 v1
- Checksum8925F8138EDFCB6A