The biosynthetic origin of the carboxyl oxygen atoms of the carotenoid pigment, torularhodin.
D002338:Carotenoids / Q000096:biosynthesis*; D055598:Chemical Phenomena; D002621:Chemistry; D066298:In Vitro Techniques; D003904:Mitosporic Fungi / Q000378:metabolism*; D010100:Oxygen / Q000378:metabolism*; D010103:Oxygen Isotopes
D010103:Oxygen Isotopes; D002338:Carotenoids; D010100:Oxygen