PROCESS FOR PRODUCING AMINO ACID

摘要

Disclosed is a process for producing amino acids such as L-threonine and L-lysine, which comprises culturing, in a medium containing methanol as a major carbon source, a microorganism which belongs to the genus Methylobacillus and which has an ability to produce the amino acid(s) and resistance to at least one member selected from the group consisting of L-threonine, L-lysine and an amino acid analogue, said microorganism being obtained by mutation of a parent strain which belongs to the genus Methylobacillus and which has an enhanced sensitivity to at least one of an antibiotic and an amino acid analogue; allowing the amino acid(s) to accumulate in the culture; and recovering the amino acid(s) therefrom.