Ascopyrone tautomerase
In enzymology, an ascopyrone tautomerase (EC 5.3.2.7) is an enzyme that catalyzes the chemical reaction
- 1,5-anhydro-4-deoxy-D-glycero-hex-3-en-2-ulose 1,5-anhydro-4-deoxy-D-glycero-hex-1-en-3-ulose
| Ascopyrone tautomerase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 5.3.2.7 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| |||||||||
Hence, this enzyme has one substrate, 1,5-anhydro-4-deoxy-D-glycero-hex-3-en-2-ulose, and one product, 1,5-anhydro-4-deoxy-D-glycero-hex-1-en-3-ulose.
The enzyme is involved with the anhydrofructose pathway.[1]
This enzyme belongs to the family of isomerases, specifically those intramolecular oxidoreductases interconverting keto- and enol-groups. The systematic name of this enzyme class is 1,5-anhydro-4-deoxy-D-glycero-hex-3-en-2-ulose Delta3-Delta1-isomerase. Other names in common use include ascopyrone isomerase, ascopyrone intramolecular oxidoreductase, 1,5-anhydro-D-glycero-hex-3-en-2-ulose tautomerase, APM tautomerase, ascopyrone P tautomerase, and APTM.
See also
- Anhydrofructose pathway
- 1,5-anhydro-D-fructose dehydratase
- exo-(1→4)-α-D-glucan lyase
References
- IUBMB - Anhydrofructose Pathway
- Yu S, Refdahl C, Lundt I (2004). "Enzymatic description of the anhydrofructose pathway of glycogen degradation; I. Identification and purification of anhydrofructose dehydratase, ascopyrone tautomerase and alpha-1,4-glucan lyase in the fungus Anthracobia melaloma". Biochim. Biophys. Acta. 1672 (2): 120–9. doi:10.1016/j.bbagen.2004.03.004. PMID 15110094.
- Yu S, Fiskesund R (2006). "The anhydrofructose pathway and its possible role in stress response and signaling". Biochim. Biophys. Acta. 1760 (9): 1314–22. doi:10.1016/j.bbagen.2006.05.007. PMID 16822618.