Electron microscopy and computer image averaging of ice-embedded large ribosomal subunits from Escherichia coli.

Electron microscopy and computer image averaging of ice-embedded large ribosomal subunits from Escherichia coli.
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来自大肠杆菌的冰包埋大核糖体亚基的电子显微镜和计算机图像平均。

DOI:
10.1016/0022-2836(88)90384-1
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发表时间:
1988
影响因子:
5.6
通讯作者:
J. Frank
J. Frank
中科院分区:
生物学2区
文献类型:
--
作者:
T. Wagenknecht;R. Grassucci;J. Frank

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相似文献

本文用计算机图象处理技术分析了大肠杆菌核糖体大亚基冷冻水化后的电子显微照片。在所谓的“冠”方向的亚基的图像进行了分析,负染色标本的相关性对齐程序。比对图像的分析显示出与阴性染色标本测定的平均值的相似性和差异。与负染亚基相比,冷冻-水化亚基的L1脊更密集,呈茎状。可能是因为它与核糖体RNA有关。结果表明,它应该是可行的,以确定的三维结构的核糖体大亚基从显微照片的个人,冷冻水化的亚基已倾斜的电子显微镜。
Electron micrographs of frozen-hydrated, large ribosomal subunits fromEscherichia colihave been analyzed by computer image processing. Images of subunits in the so-called “crown” orientation were analyzed by correlation alignment procedures developed for negatively stained specimens. Averages of the aligned images showed both similarities and differences to averages determined for negatively stained specimens. The L1 ridge is more dense and stalk-like in frozen-hydrated as compared with negatively stained subunits. possibly because it is associated with ribosomal RNA. The results show that it should be feasible to determine the three-dimensional structure of the large ribosomal subunit from micrographs of individual, frozen-hydrated subunits that have been tilted in the electron microscope.
通过电子显微镜和图像分析研究 50 S 核糖体亚基。
DOI: 10.1016/0889-1605(85)90045-x
发表时间: 1985
期刊: Journal of ultrastructure research
影响因子: --
作者:
Verschoor,A;Frank,J;Boublik,M
通讯作者: Boublik,M
大肠杆菌 70 S 单体的计算机平均视图。
DOI: 10.1016/0022-2836(86)90336-0
发表时间: 1986
影响因子: 5.6
作者:
Verschoor,A;Frank,J;Wagenknecht,T;Boublik,M
通讯作者: Boublik,M
DOI: --
发表时间: 1986
期刊: The Journal of biological chemistry
影响因子: --
作者:
Olson,HM;Sommer,A;Tewari,DS;Traut,RR;Glitz,DG
通讯作者: Glitz,DG