Bile Pigment Formation in Plants

Science  09 Jan 1970:
Vol. 167, Issue 3915, pp. 192-193
DOI: 10.1126/science.167.3915.192


The unicellular alga Cyanidium caldarium evolves carbon monoxide during the syntheis of the bile pigment, phycocyanobilin. Carbon monoxide and phycocyanobilin were produced in stoichiometric amounts at comparable rates. Therefore, the mechanism of bile pigment formation in this plant parallels that in mammals.