5.5.1.19	carotenoid psi-end group	-	
5.5.1.19	delta-carotene	-	
5.5.1.19	gamma-carotene	-	
5.5.1.19	lycopene	-	
5.5.1.19	lycopene	the crtL gene product converts the acyclic hydrocarbon lycopene into the bicyclic beat-carotene, an essential component of the photosynthetic apparatus in oxygen-evolving organisms and a source of vitamin A in human and animal nutrition	
5.5.1.19	lycopene	beta-LCY acts sequentially on both ends of lycopene, originating beta-carotene as a final product and gamma-carotene as an intermediate	
5.5.1.19	additional information	a bifunctional enzyme with lycopene cyclase and phytoene synthase activities	
5.5.1.19	additional information	the enzyme does not have epsilon-cyclization activity