Methionine biosynthesis

[ "Homocysteine", "Methionine synthase", "Mutant", "Escherichia coli", "Biosynthesis", "Leptospira meyeri", "O-succinylhomoserine (thiol)-lyase", "O-acetylhomoserine sulfhydrylase", "Homoserine O-acetyltransferase", "Homoserine acetyltransferase" ]