Inoue Azusa, Murata Yoshimitsu, Takahashi Hiroshi, Tsuji Naoko, Fujisaki Shingo, Kato Jun-ichi
Department of Biological Sciences, Graduate School of Science, Tokyo Metropolitan University, Minamiohsawa, Hachioji, Tokyo 192-0397, Japan.
J Bacteriol. 2008 Nov;190(21):7298-301. doi: 10.1128/JB.00551-08. Epub 2008 Aug 15.
We isolated a temperature-sensitive mutant with a mutation in mviN, an essential gene in Escherichia coli. At the nonpermissive temperature, mviN mutant cells swelled and burst. An intermediate in murein synthesis, polyprenyl diphosphate-N-acetylmuramic acid-(pentapeptide)-N-acetyl-glucosamine, accumulated in mutant cells. These results indicated that MviN is involved in murein synthesis.
我们分离出了一个mviN基因发生突变的温度敏感型突变体,mviN是大肠杆菌中的一个必需基因。在非允许温度下,mviN突变体细胞肿胀并破裂。肽聚糖合成的一个中间体,聚异戊二烯二磷酸-N-乙酰胞壁酸-(五肽)-N-乙酰葡糖胺,在突变体细胞中积累。这些结果表明MviN参与肽聚糖的合成。