细菌视紫红质中质子泵出的分子机理  

Molecular mechanism of proton pumping out from bacteriorhodopsin

作　　者：王德国[1] 吕晓波[2] 雷勃均[2] 张俐俐[2] 刘琦[2] 

机构地区：[1]东北农业大学生命科学院,黑龙江哈尔滨150030 [2]黑龙江省农业科学院生物技术研究中心,黑龙江哈尔滨150086

出　　处：《微生物学杂志》2006年第6期85-88,共4页Journal of Microbiology

摘　　要：细菌视紫红质(Bacteriorhodopsin,或bR)是盐生嗜盐菌(Halobacterium salinarium)等细菌的跨膜蛋白质,其色基视黄醛的光致异构化作用触发细菌视紫红质的一系列结构变化,把质子从细胞质泵到细胞外空间。对细菌视紫红质中质子泵出分子机理进行了描述。Bacteriorhodopsin is a 7-helix transmembrane protein found in purple membrane of Halobacterium salinarium. A series of structural changes triggered when absorption of light energy caused isomerization of bacteriorhodopsin＇s bound retinal, and protons were transported from the inside of the cell to the out side medium and thereby converted light energy into chemical energy which enables the halobacterium to survive. This paper mainly described molecular mechanism of proton pumping out from bacteriorhodopsin.

关 键 词：细菌视紫红质 视黄醛 光致异构化作用 

分 类 号：Q73[生物学—分子生物学]