Lycopene beta-cyclase

Lycopene β-cyclase (EC 5.5.1.19, CrtL, CrtL-b, CrtY) is an enzyme with systematic name carotenoid beta-end group lyase (decyclizing).^{[1][2][3][4][5][6]} This enzyme catalyses the following chemical reaction

carotenoid ψ-end group ${\displaystyle \rightleftharpoons }$ carotenoid β-end group

Lycopene β-cyclase
Identifiers
EC no.	5.5.1.19
CAS no.	220801-82-1
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 requires NAD(P)H. It converts Lycopene (2 ψ ends) into β-carotene (2 β ends).