Nutritional studies with Acetobacter suboxydans indicated that
when isoleucine, lysine, methionine, serine and arginine were singly
omitted from a complete amino acid mixture, no growth was obtained.
However, the organism could grow on single amino acids like glutamic
acid, histidine and proline. No growth was obtained with ammonium
sulfate as...
The terminal reactions in the biosynthetic pathway of methionine
in Saccharomyces cerevisiae were investigated in this study. Analyses
of a number of methionine auxotrophs for biochemical deficiences
established four mutant groups. It was observed from qualitative feeding
experiments that some auxotrophs were able to utilize S-adenosylmethionine
(AM) and S-adenosyl-homocysteine (AH)...