STRUCTURE OF THE LIGHT-HARVESTING ANTENNA FROM RHODOSPIRILLUM-MOLISCHIANUM STUDIED BY ELECTRON-MICROSCOPY

被引：46

作者：

BOONSTRA, AF

GERMEROTH, L

BOEKEMA, EJ

机构：

[1] UNIV GRONINGEN, BIOSON, RES INST, 9747 AG GRONINGEN, NETHERLANDS

[2] MAX PLANCK INST BIOPHYS, MOLEK MEMBRANBIOL ABT, W-6000 FRANKFURT, GERMANY

来源：

BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS | 1994年 / 1184卷 / 2-3期

关键词：

LIGHT-HARVESTING COMPLEX; PHOTOSYNTHESIS; BACTERIUM; ELECTRON MICROSCOPY; (RHODOSPIRILLUM MOLISCHIANUM);

D O I：

10.1016/0005-2728(94)90227-5

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：

The structure of two types of isolated light-harvesting antenna complexes from Rhodospirillum molischianum was studied by electron microscopy and image analysis. The B870 reaction center complex forms an almost circular particle with a diameter in the plane of the membrane of about 10.7-11.2 nm. A complex consists of a reaction center surrounded most likely by 12 B870 antennae units. An asymmetrical protrusion, consisting of the cytochrome subunit, gives the reaction center a height of 11.5 nm. The peripheral B800-820 complex is cylindrical, with a diameter of 5.3 nm and a small central indentation. At low resolution, it is structurally very similar to the B800-850 complex of Rhodobacter sphaeroides and is considered to be most likely of the alpha(6) beta(6) type.

引用

页码：227 / 234

页数：8

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