Plamann M D, Stauffer G V
Department of Microbiology, University of Iowa, Iowa City 52242.
J Bacteriol. 1989 Sep;171(9):4958-62. doi: 10.1128/jb.171.9.4958-4962.1989.
The methionine component of glyA gene regulation in Escherichia coli K-12 was investigated. The results indicate that the glyA gene is positively controlled by the metR gene product. Activation of glyA by the MetR protein requires homocysteine, an intermediate in methionine biosynthesis. The positive-acting metR regulatory system functions independently of a regulatory system shown previously to control glyA gene expression.
对大肠杆菌K-12中glyA基因调控的甲硫氨酸成分进行了研究。结果表明,glyA基因受metR基因产物的正向调控。MetR蛋白对glyA的激活需要同型半胱氨酸,它是甲硫氨酸生物合成的中间产物。起正向作用的metR调控系统独立于先前显示的控制glyA基因表达的调控系统发挥作用。