A0A3R8RZ02 · A0A3R8RZ02_9ACTN
- ProteinL-threonine 3-dehydrogenase
- Genetdh
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids342 (go to sequence)
- Protein existenceInferred from homology
- Annotation score4/5
Function
function
Catalyzes the NAD+-dependent oxidation of L-threonine to 2-amino-3-ketobutyrate.
Catalyzes the oxidation of 2-deoxy-scyllo-inosamine (DOIA) with NAD+ or NADP+, forming 3-amino-2,3-dideoxy-scyllo-inosose (amino-DOI).
Catalytic activity
- 2-deoxy-scyllo-inosamine + NAD+ = 3-amino-2,3-dideoxy-scyllo-inosose + H+ + NADH
Cofactor
Note: Binds 2 Zn2+ ions per subunit.
Pathway
Amino-acid degradation; L-threonine degradation via oxydo-reductase pathway; glycine from L-threonine: step 1/2.
Antibiotic biosynthesis.
Metabolic intermediate biosynthesis; 2-deoxystreptamine biosynthesis; 2-deoxystreptamine from D-glucose 6-phosphate: step 3/4.
Features
Showing features for binding site, active site, site.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Binding site | 38 | Zn2+ 1 (UniProtKB | ChEBI); catalytic | ||||
Sequence: C | ||||||
Active site | 40 | Charge relay system | ||||
Sequence: T | ||||||
Active site | 43 | Charge relay system | ||||
Sequence: H | ||||||
Binding site | 63 | Zn2+ 1 (UniProtKB | ChEBI); catalytic | ||||
Sequence: H | ||||||
Binding site | 64 | Zn2+ 1 (UniProtKB | ChEBI); catalytic | ||||
Sequence: E | ||||||
Binding site | 93 | Zn2+ 2 (UniProtKB | ChEBI) | ||||
Sequence: C | ||||||
Binding site | 96 | Zn2+ 2 (UniProtKB | ChEBI) | ||||
Sequence: C | ||||||
Binding site | 99 | Zn2+ 2 (UniProtKB | ChEBI) | ||||
Sequence: C | ||||||
Binding site | 107 | Zn2+ 2 (UniProtKB | ChEBI) | ||||
Sequence: C | ||||||
Site | 148 | Important for catalytic activity for the proton relay mechanism but does not participate directly in the coordination of zinc atom | ||||
Sequence: D | ||||||
Binding site | 175 | NAD+ (UniProtKB | ChEBI) | ||||
Sequence: I | ||||||
Binding site | 195 | NAD+ (UniProtKB | ChEBI) | ||||
Sequence: D | ||||||
Binding site | 200 | NAD+ (UniProtKB | ChEBI) | ||||
Sequence: R | ||||||
Binding site | 262-264 | NAD+ (UniProtKB | ChEBI) | ||||
Sequence: LGL | ||||||
Binding site | 286-287 | NAD+ (UniProtKB | ChEBI) | ||||
Sequence: IY |
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | cytoplasm | |
Molecular Function | L-threonine 3-dehydrogenase activity | |
Molecular Function | zinc ion binding | |
Biological Process | L-threonine catabolic process to glycine |
Keywords
- Molecular function
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameL-threonine 3-dehydrogenase
- EC number
- Short namesTDH
Gene names
Organism names
- Organism
- Strain
- Taxonomic lineageBacteria > Actinomycetota > Actinomycetes > Kitasatosporales > Streptomycetaceae > Streptomyces
Accessions
- Primary accessionA0A3R8RZ02
Proteomes
Subcellular Location
Interaction
Subunit
Homotetramer.
Structure
Family & Domains
Features
Showing features for domain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Domain | 24-133 | Alcohol dehydrogenase-like N-terminal | ||||
Sequence: GPGDVLIKVLRTGICGTDLHIRSWDGWAQQAIRTPLVLGHEFVGEVVETGRDVTEIKAGDRVSGEGHLVCGKCRNCLAGRRHLCRATVGLGVGRDGAFAEYVALPAANVW | ||||||
Domain | 174-300 | Alcohol dehydrogenase-like C-terminal | ||||
Sequence: PIGLMAAAVARHAGARNVVVTDVSEERLELARKIGVSLALNVSEAAITDGQRELGLREGFDIGLEMSGRPEALRDMIANMTHGGRIAMLGLPAAEFPVDWARIVTSMITIKGIYGREMFETWYAMSV |
Sequence similarities
Belongs to the zinc-containing alcohol dehydrogenase family. DOIA dehydrogenase subfamily.
Phylogenomic databases
Family and domain databases
Sequence
- Sequence statusComplete
- Length342
- Mass (Da)36,513
- Last updated2019-04-10 v1
- ChecksumF4F09463B2B9F5A1
Keywords
- Technical term