oaioai:CiteSeerX.psu:10.1.1.591.1157

BB, Biochi~ic~a et Biophysica A~ta Structure of the light harvesting antenna from Rhodospirillum molischianum studied by electron microscopy

Abstract

(Revised manuscript received 1September 1993) 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 O/686 type

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oaioai:CiteSeerX.psu:10.1.1.591.1157Last time updated on 10/29/2017

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