Biosynthesis of chlorophyll a from 13C-labelled mevalonates and glycine in liverwort. Nonequivalent labelling of phytyl side chain
Abstract
The phytyl side chain of chlorophyll a derived from exogenous 13C- and 2H-labelled mevalonate in cultured cells of two species of liverworts, Heteroscyphus ptanus and Lophocolea heterophylla, is shown to be preferentially labelled in the farnesyl diphosphate-derived portion, while its biosynthesis from exogenous 13C-glycine results in equivalent labelling.