PURIFICATION AND CRYSTALLIZATION OF THE LIGHT HARVESTING LH1 COMPLEX FROM RHODOBACTER-SPHAEROIDES

被引：19
作者：
NUNN, RS
ARTYMIUK, PJ
BAKER, PJ
RICE, DW
HUNTER, CN
机构：
[1] Krebs Institute for Biomolecular Research Department of Molecular Biology, Biotechnology University of Sheffield, Sheffield
来源：
JOURNAL OF MOLECULAR BIOLOGY | 1992年 / 228卷 / 04期
关键词：
LIGHT HARVESTING COMPLEX; LH1; CRYSTALLIZATION; MEMBRANE PROTEIN; PHOTOSYNTHESIS;
D O I：
10.1016/0022-2836(92)90331-D
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 LH1 light harvesting complex has been purified from a mutant of the photosynthetic bacterium Rhodobacter sphaeroides which synthesizes LH1 as the sole pigment protein. Crystallization trials using polyethylene glycol as the precipitant in the presence of the detergent n-octyl glucoside have resulted in the formation of needle like crystals which diffract beyond 3.5 Å and which are relatively resistant to radiation damage. X-ray photographs have established that the crystals belong to the tetragonal system and are probably in space group P42212. Estimates of the crystal density indicate that the asymmetric unit of the crystals contains two oligomers each with an α6β6 stoichiometry. © 1992.
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页码：1259 / 1262
页数：4
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