9,9'-Dicis-zeta-carotene desaturase

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 ${\displaystyle \rightleftharpoons }$ 7,9,7',9'-tetracis-lycopene + 2 quinol (overall reaction)

(1a) 9,9'-dicis-zeta-carotene + a quinone ${\displaystyle \rightleftharpoons }$ 7,9,9'-tricis-neurosporene + a quinol

(1b) 7,9,9'-tricis-neurosporene + a quinone ${\displaystyle \rightleftharpoons }$ 7,9,7',9'-tetracis-lycopene + a quinol

9,9'-dicis-zeta-carotene desaturase
Identifiers
EC no.	1.3.5.6
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Search PMC articles PubMed articles NCBI proteins

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