Biology:Methylthioribulose 1-phosphate dehydratase

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methylthioribulose 1-phosphate dehydratase
4m6r apip.png
X-ray structure of human methylthioribulose 1-phosphate dehydratase (APIP). PDB entry 4m6r[1]
Identifiers
EC number4.2.1.109
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO

The enzyme methylthioribulose 1-phosphate dehydratase (EC .2.1.109) catalyzes the chemical reaction

5-(methylsulfanyl)-D)ribulose 1-phosphate [math]\displaystyle{ \rightleftharpoons }[/math] 5-(methylthio)-2,3-dioxopentyl phosphate + H2

This enzyme belongs to the family of lyases, specifically the hydro-lyases, which cleave carbon-oxygen bonds. The systematic name of this enzyme class is 5-methyl-5-thio-D-ribulose-1-phosphate 4-hydro-lyase [5-(methylthio)-2,3-dioxopentyl-phosphate-forming]. Other names in common use include 1-PMT-ribulose dehydratase, and S-methyl-5-thio-D-ribulose-1-phosphate hydro-lyase. This enzyme participates in methionine metabolism.

References

  1. Kang, W; Hong, S. H.; Lee, H. M.; Kim, N. Y.; Lim, Y. C.; Le Le, T. M.; Lim, B; Kim, H. C. et al. (2014). "Structural and biochemical basis for the inhibition of cell death by APIP, a methionine salvage enzyme". Proceedings of the National Academy of Sciences 111 (1): E54-61. doi:10.1073/pnas.1308768111. PMID 24367089. Bibcode2014PNAS..111E..54K. 
  • "Intermediates in the conversion of 5'-S-methylthioadenosine to methionine in Klebsiella pneumoniae". J. Biol. Chem. 263 (20): 9598–606. 1988. doi:10.1016/S0021-9258(19)81558-2. PMID 2838472. 
  • "The methionine salvage pathway in Klebsiella pneumoniae and rat liver. Identification and characterization of two novel dioxygenases". J. Biol. Chem. 270 (7): 3147–53. 1995. doi:10.1074/jbc.270.7.3147. PMID 7852397.