Abstract: | SYNOPSIS. A strain of the marine algal flagellate Neochloris pseudoalgeolaris required only an inorganic medium for growth; however, in media containing vitamin B12 it became greener, protein synthesis was modified, and the levels of DNA and RNA increased. By isotope tracer technics, transmethylation of the methyl group of methionine was found to play a role in modulation of protein synthesis governed by the vitamin. These results indicate that vitamin B12 stimulates synthesis of chloroplasts in this algal strain. |