Aldos-2-ulose dehydratase
| Aldos-2-ulose dehydratase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 4.2.1.110 | ||||||||
| CAS no. | 101920-80-3 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| |||||||||
Aldos-2-ulose dehydratase (EC 4.2.1.110, pyranosone dehydratase, AUDH, 1,5-anhydro-D-fructose dehydratase (microthecin-forming)) is an enzyme with systematic name 1,5-anhydro-D-fructose hydro-lyase (microthecin-forming).[1][2][3][4][5] This enzyme catalyses the following chemical reaction
- 1,5-anhydro-D-fructose 2-hydroxy-2-(hydroxymethyl)-2H-pyran-3(6H)-one + H2O (overall reaction)
- (1a) 1,5-anhydro-D-fructose 1,5-anhydro-4-deoxy-D-glycero-hex-3-en-2-ulose + H2O
- (1b) 1,5-anhydro-4-deoxy-D-glycero-hex-3-en-2-ulose 2-hydroxy-2-(hydroxymethyl)-2H-pyran-3(6H)-one
This enzyme catalyses two of the steps in the anhydrofructose pathway.
References
[edit]- ^ Yu S, Fiskesund R (September 2006). "The anhydrofructose pathway and its possible role in stress response and signaling". Biochimica et Biophysica Acta (BBA) - General Subjects. 1760 (9): 1314–22. doi:10.1016/j.bbagen.2006.05.007. PMID 16822618.
- ^ Yu S (May 2005). "Enzymatic description of the anhydrofructose pathway of glycogen degradation II. Gene identification and characterization of the reactions catalyzed by aldos-2-ulose dehydratase that converts 1,5-anhydro-D-fructose to microthecin with ascopyrone M as the intermediate". Biochimica et Biophysica Acta. 1723 (1–3): 63–73. doi:10.1016/j.bbagen.2005.01.004. PMID 15716041.
- ^ Broberg, A.; Kenne, L.; Pedersén, M. (1996). "Presence of microthecin in the red alga Gracilariopsis lemaneiformis and its formation from 1,5-anhydro-D-fructose". Phytochemistry. 41 (1): 151–154. Bibcode:1996PChem..41..151B. doi:10.1016/0031-9422(95)00587-0.
- ^ Gabriel J, Volc J, Sedmera P, Daniel G, Kubátová E (1993). "Pyranosone dehydratase from the basidiomycete Phanerochaete chrysosporium: improved purification, and identification of 6-deoxy-D-glucosone and D-xylosone reaction products". Archives of Microbiology. 160 (1): 27–34. doi:10.1007/BF00258142. PMID 8352649. S2CID 5987101.
- ^ Yu S, Refdahl C, Lundt I (May 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". Biochimica et Biophysica Acta. 1672 (2): 120–9. doi:10.1016/j.bbagen.2004.03.004. PMID 15110094.
External links
[edit]- Aldos-2-ulose+dehydratase at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
