EVIDENCE FOR RIFAMPICIN-PROMOTED READTHROUGH OF A FULLY RHO-DEPENDENT TRANSCRIPTIONAL TERMINATOR

被引:11
作者
CROMIE, KD [1 ]
HAYWARD, RS [1 ]
机构
[1] UNIV EDINBURGH, DEPT MOLEC BIOL, EDINBURGH EH9 3JR, MIDLOTHIAN, SCOTLAND
来源
MOLECULAR AND GENERAL GENETICS | 1984年 / 193卷 / 03期
关键词
D O I
10.1007/BF00382095
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Rifampicin promotes readthrough of various transcriptional terminators in vivo, a conclusion based on previous measurements of galactokinase or .beta.-galactosidase synthesis in Escherichia coli strains with plasmids having the terminators fused upstream of galK or lacZ, respectively. However, the terminators tested did not include a fully rho-dependent signal. It is now shown that the drug stimulates galactokinase production when galK is fused downstream of such a terminator, the 1st rightward terminator of phage .lambda.. The nusA1 host mutation affects neither termination nor the drug response at this site.
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页码:532 / 534
页数:3
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