Biology:9,9'-Dicis-zeta-carotene desaturase

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Short description: Class of enzymes
9,9'-dicis-zeta-carotene desaturase
Identifiers
EC number1.3.5.6
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum

9,9'-dicis-zeta-carotene desaturase (EC 1.3.5.6, zeta-carotene desaturase, ZDS) is an enzyme with systematic name 9,9'-dicis-zeta-corotene:quinone oxidoreductase.[1][2][3][4] This enzyme catalyses the following chemical reaction

9,9'-dicis-zeta-carotene + 2 quinone [math]\displaystyle{ \rightleftharpoons }[/math] 7,9,7',9'-tetracis-lycopene + 2 quinol (overall reaction)
(1a) 9,9'-dicis-zeta-carotene + a quinone [math]\displaystyle{ \rightleftharpoons }[/math] 7,9,9'-tricis-neurosporene + a quinol
(1b) 7,9,9'-tricis-neurosporene + a quinone [math]\displaystyle{ \rightleftharpoons }[/math] 7,9,7',9'-tetracis-lycopene + a quinol

This enzyme is involved in carotenoid biosynthesis in plants and cyanobacteria.

References

  1. "Biochemical characterization of purified zeta-carotene desaturase from Anabaena PCC 7120 after expression in Escherichia coli". European Journal of Biochemistry 236 (1): 115–20. February 1996. doi:10.1111/j.1432-1033.1996.00115.x. PMID 8617254. 
  2. "A plastid terminal oxidase associated with carotenoid desaturation during chromoplast differentiation". Plant Physiology 123 (4): 1427–36. August 2000. doi:10.1104/pp.123.4.1427. PMID 10938359. 
  3. "Catalytic properties of an expressed and purified higher plant type zeta-carotene desaturase from Capsicum annuum". European Journal of Biochemistry 265 (1): 376–83. October 1999. doi:10.1046/j.1432-1327.1999.00746.x. PMID 10491195. 
  4. "zeta-Carotene cis isomers as products and substrates in the plant poly-cis carotenoid biosynthetic pathway to lycopene". Planta 220 (5): 785–93. March 2005. doi:10.1007/s00425-004-1395-2. PMID 15503129. 

External links