title: Structure of the principal carotenoid pigment of Cellulomonas biazotea.
abstract: The yellow-pigmented Cellulomonas biazotea, ATCC 486, contains a mixture of carotenoids. The principal compound is a decapreno carotenoid (C50H72O2) tentatively characterized as 2,2'-bis(4-hydroxy-3-methyl-2-butenyl)-gamma,gamma-carotene on the basis of electronic absorption, infrared, proton magnetic resonance, and mass spectrometries. The carotenoid is presumed to be identical to sarcinaxanthin from Sarcina lutea pro-synon. Micrococcus luteus and, therefore, is isomeric with decaprenoxanthin from Cellulomonas dehydrogenans.
mesh_terms: D000192:Actinomycetales / Q000032:analysis*; D002338:Carotenoids / Q000032:analysis*; D055598:Chemical Phenomena; D002621:Chemistry; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D011522:Protons; D013055:Spectrophotometry, Infrared
chemical_list: D011522:Protons; D002338:Carotenoids