Status	Description	Organism	Genes	References
	four-step phytoene desaturase	Halogeometricum borinquense	GCNS-1063
	four-step phytoene desaturase	Halogeometricum pallidum	G11BF-1310
	four-step phytoene desaturase	Mycobacterium gilvum	G12XG-1200
	Phytoene desaturase	Pantoea ananatis	GLI8-3981	[1] [2]
	Phytoene desaturase	Erwinia herbicola	EhCrtI	[1]