Biology:3-hexulose-6-phosphate synthase

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Short description: Class of enzymes
3-hexulose-6-phosphate synthase
Identifiers
EC number4.1.2.43
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum

3-hexulose-6-phosphate synthase (EC 4.1.2.43, D-arabino-3-hexulose 6-phosphate formaldehyde-lyase, 3-hexulosephosphate synthase, 3-hexulose phosphate synthase, HPS) is an enzyme with systematic name D-arabino-hex-3-ulose-6-phosphate formaldehyde-lyase (D-ribulose-5-phosphate-forming).[1][2][3][4][5][6][7] This enzyme catalyses the following chemical reaction

D-arabino-hex-3-ulose 6-phosphate [math]\displaystyle{ \rightleftharpoons }[/math] D-ribulose 5-phosphate + formaldehyde

This enzyme requires Mg2+ or Mn2+ for maximal activity.

References

  1. "Purification and properties of 3-hexulose phosphate synthase and phospho-3-hexuloisomerase from Methylococcus capsulatus". The Biochemical Journal 144 (3): 477–86. December 1974. doi:10.1042/bj1440477. PMID 4219834. 
  2. "3-Hexulosephosphate synthase from Methylomonas aminofaciens 77a. Purification, properties and kinetics". Biochimica et Biophysica Acta (BBA) - Enzymology 523 (1): 236–44. March 1978. doi:10.1016/0005-2744(78)90026-8. PMID 564713. 
  3. "Cloning and sequence analysis of the gene encoding 3-hexulose-6-phosphate synthase from the methylotrophic bacterium, Methylomonas aminofaciens 77a, and its expression in Escherichia coli". FEMS Microbiology Letters 135 (2–3): 201–5. January 1996. doi:10.1111/j.1574-6968.1996.tb07990.x. PMID 8595859. 
  4. "Assimilation, dissimilation, and detoxification of formaldehyde, a central metabolic intermediate of methylotrophic metabolism". Chemical Record 5 (6): 367–75. 2005. doi:10.1002/tcr.20056. PMID 16278835. 
  5. "The physiological role of the ribulose monophosphate pathway in bacteria and archaea". Bioscience, Biotechnology, and Biochemistry 70 (1): 10–21. January 2006. doi:10.1271/bbb.70.10. PMID 16428816. 
  6. "The archaeon Pyrococcus horikoshii possesses a bifunctional enzyme for formaldehyde fixation via the ribulose monophosphate pathway". Journal of Bacteriology 187 (11): 3636–42. June 2005. doi:10.1128/jb.187.11.3636-3642.2005. PMID 15901685. 
  7. Kato, N.; Miyamoto, N.; Shimao, M.; Sakazawa, C. (1988). "3-Hexulose phosphate pynthase from a new facultative methylotroph, Mycobacterium gastri MB19". Agric. Biol. Chem. 52 (10): 2659–2661. doi:10.1271/bbb1961.52.2659. 

External links