Blombach Bastian, Arndt Annette, Auchter Marc, Eikmanns Bernhard J
Institute of Microbiology and Biotechnology, University of Ulm, 89069 Ulm, Germany.
Appl Environ Microbiol. 2009 Feb;75(4):1197-200. doi: 10.1128/AEM.02351-08. Epub 2008 Dec 16.
Pyruvate dehydrogenase complex-deficient strains of Corynebacterium glutamicum produce L-valine from glucose only after depletion of the acetate required for growth. Here we show that inactivation of the DeoR-type transcriptional regulator SugR or replacement of acetate by ethanol already in course of the growth phase results in efficient L-valine production.
谷氨酸棒杆菌丙酮酸脱氢酶复合体缺陷型菌株仅在生长所需的乙酸盐耗尽后才能从葡萄糖产生L-缬氨酸。在此我们表明,在生长阶段使DeoR型转录调节因子SugR失活或用乙醇替代乙酸盐,会导致高效的L-缬氨酸生产。