Deana A, Ehrlich R, Reiss C
Laboratoire Structure et Dynamique du Génome, Centre de Génétique Moléculaire, Centre National de la Recherch Scientifique, Gif sur Yvette, France.
J Bacteriol. 1996 May;178(9):2718-20. doi: 10.1128/jb.178.9.2718-2720.1996.
A number of silent codon changes were made in two Escherichia coli genes. For the ompA gene, the replacement of seven consecutive frequently used codons with synonymous infrequently used codons reduced the ompA mRNA level and its half-life. For the bla gene, the exchange of 24 codons for the most frequently used synonymous codons extended the bla mRNA half-life. A modification of ribosome traffic could account for these observations.
在两个大肠杆菌基因中进行了一些沉默密码子的改变。对于ompA基因,用不常用的同义密码子替换七个连续常用密码子,降低了ompA mRNA水平及其半衰期。对于bla基因,将24个密码子替换为最常用的同义密码子,延长了bla mRNA的半衰期。核糖体移动的改变可以解释这些观察结果。