Institute of Microbiology and Biotechnology, University of Ulm, Ulm, Germany.
Appl Environ Microbiol. 2010 Jan;76(1):370-4. doi: 10.1128/AEM.01553-09. Epub 2009 Oct 30.
Corynebacterium glutamicum efficiently utilizes maltose as a substrate. We show here that the presence of maltose increases glucose utilization by raising the expression of ptsG, which encodes the glucose-specific EII permease of the phosphotransferase system. Consequently, the L-valine productivity of a pyruvate dehydrogenase complex-deficient C. glutamicum strain was improved by the presence of maltose.
谷氨酸棒杆菌能够有效地利用麦芽糖作为底物。我们在这里表明,麦芽糖的存在通过提高编码磷酸转移酶系统中葡萄糖特异性 EII 通透酶的 ptsG 的表达来增加葡萄糖的利用。因此,麦芽糖的存在提高了丙酮酸脱氢酶复合体缺陷型谷氨酸棒杆菌菌株的 L-缬氨酸生产力。