ASSOCIATION OF THE HALOBACTERIAL-7S RNA TO THE POLYSOME CORRELATES WITH EXPRESSION OF THE MEMBRANE-PROTEIN BACTERIOOPSIN

被引:44
作者
GROPP, R [1 ]
GROPP, F [1 ]
BETLACH, MC [1 ]
机构
[1] UNIV CALIF SAN FRANCISCO, DEPT BIOCHEM & BIOPHYS, SAN FRANCISCO, CA 94143 USA
关键词
BACTERIORHODOPSIN; ARCHAEBACTERIA; SIGNAL-RECOGNITION PARTICLE; SIGNAL SEQUENCE;
D O I
10.1073/pnas.89.4.1204
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The sedimentation behavior of the halobacterial 7S RNA and bacterioopsin mRNA was assessed after application of total cell lysates to sucrose gradients. These two RNAs cosedimented predominantly with membrane-bound polysomes, and the quantity of 7S RNA bound to the ribosomes was directly correlated with the expression of bacterioopsin. Puromycin treatment released the 7S RNA from the polysomes, indicating that it is transiently associated with protein translation. We suggest that halobacteria contain a signal-recognition-like particle involved in translation of membrane-associated proteins.
引用
收藏
页码:1204 / 1208
页数:5
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