Patent ID: 9096860
Filing Date: 2015-08-04
Classification: C12N,C12P,C12Y

Abstract:
1. An isolated mutant microorganism exhibiting high production of 1,4-butanediol, which is prepared by introducing or amplifying genes encoding enzymes converting succinate into 4-hydroxybutyrate, and 4-hydroxybutyrate into 1,4-butanediol, in an E. coli capable of producing succinate, wherein the E. coli has inactive genes encoding glucose phosphotransferase (ptsG) and pyruvate kinase (pykA and pykF), and produces succinate in high concentration without substantial production of other organic acids in anaerobic condition, wherein the gene encoding the enzyme converting succinate into 4-hydroxybutyrate is selected from the group consisting of genes encoding succinyl-CoA transferase (Cat 1), succinate semialdehyde dehydrogenase (SucD), 4-hydroxybutyrate dehydrogenase (4hbD) and 4-hydroxybutyrate dehydrogenase (GHB).