Biology:4,4'-Diapophytoene synthase

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Short description: Class of enzymes
4,4'-diapophytoene synthase
Identifiers
EC number2.5.1.96
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum

4,4'-diapophytoene synthase (EC 2.5.1.96, dehydrosqualene synthase, DAP synthase, C30 carotene synthase, CrtM) is an enzyme with systematic name farnesyl-diphosphate:farnesyl-diphosphate farnesyltransferase (4,4'-diapophytoene forming).[1][2][3][4] This enzyme catalyses the following chemical reaction

2 (2E,6E)-farnesyl diphosphate [math]\displaystyle{ \rightleftharpoons }[/math] 4,4'-diapophytoene + 2 diphosphate (overall reaction)
(1a) 2 (2E,6E)-farnesyl diphosphate [math]\displaystyle{ \rightleftharpoons }[/math] diphosphate + presqualene diphosphate
(1b) presqualene diphosphate [math]\displaystyle{ \rightleftharpoons }[/math] 4,4'-diapophytoene + diphosphate

This enzyme requires Mn2+. It is present in Staphylococcus aureus and some other bacteria such as Heliobacillus sp.

References

  1. "Evolution of the C30 carotenoid synthase CrtM for function in a C40 pathway". Journal of Bacteriology 184 (23): 6690–9. December 2002. doi:10.1128/jb.184.23.6690-6699.2002. PMID 12426357. 
  2. "Structure and biosynthesis of staphyloxanthin from Staphylococcus aureus". The Journal of Biological Chemistry 280 (37): 32493–8. September 2005. doi:10.1074/jbc.M505070200. PMID 16020541. 
  3. "Preparation, characterization, and optimization of an in vitro C30 carotenoid pathway". Applied and Environmental Microbiology 71 (11): 6578–83. November 2005. doi:10.1128/AEM.71.11.6578-6583.2005. PMID 16269684. 
  4. "A cholesterol biosynthesis inhibitor blocks Staphylococcus aureus virulence". Science 319 (5868): 1391–4. March 2008. doi:10.1126/science.1153018. PMID 18276850. 

External links