Dsm IP Assets B.v.

Katrin Eppelmann

Marcel G Wubbolts

Petrus M M Nossin

Susanne M Kremer

Leon J R M Raeven

Susanne Maria Kremer

Petrus Martinus Nossin

Petrus Martinus Matheus Nossin

Leon Jean Renier Marie Raeven

Leon Jean Raeven

Marcel Gerhardus Wubbolts

Process for biochemical synthesis of 1,4-butanediannine in a microorganism having an increased level of an ornithine decarboxylase activity as compared to the native level of the ornithine decarboxylase activity, in which the increased ornithine decarboxylase activity is obtained by overexpression of an ornithine decarboxylase encoding gene with increased translational and/or transcriptional efficiency. The process is performed by excreting 1,4-butanediamine produced in the microorganism into a fermentation broth, and recovering the 1,4-butanediannine from the fermentation broth. The increased translational and/or transcriptional efficiency is obtained by the use of a strong, regulated promoter consisting of an isopropvl-B-D-thiogalactoside (IPTG) inducible strong promoter.

Biochemical synthesis of 1,4-butanediamine

The invention relates to a process for biochemical synthesis of 1,4-butanediamine in a microorganism having an increased level of an ornithine decarboxylase activity (increased ODC activity) as compared to the native level of the ornithine decarboxylase activity, wherein in the microorganism also an increased activity of N-acetylglutamate formation is present as compared to the native level of activity of N-acetylglutamate formation in the microorganism and wherein 1,4-butanediamine produced in the microorganism is excreted into a fermentation broth, and is recovered from the fermentation broth. The invention also relates to vectors, plasmids and hosts carrying a corresponding increased ODC activity and an increased activity of N-acetylglutamate formation.

Growing community of inventors

Kalamazoo, MI, United States of America

Katrin Eppelmann