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.
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收藏
页码：227 / 234
页数：8
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