Investigations on the arrangement and fine structure ofPorphyridium cruentum phycobilisomes |
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Authors: | G. Wanner H. -P. Köst |
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Affiliation: | (1) Botanisches Institut, UniversitÄt München, Menzinger Strae 67, D-8000 München 19, Federal Republic of Germany |
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Abstract: | Summary Phycobilisomes ofPorphyridium cruentum were investigated in ultrathin sectionsin situ and after isolation and positive or negative staining. The phycobilisomes have the approximate shape of one half of a compressed rotation ellipsoid with the following dimensions: length 2 a=40±4 nm, width 2 b=19±2 nm, height c=28±3 nm. The phycobilisomes form rows and pillars on the thylakoid membranes. A plug-like structure (foot) which apparently fixes the phycobilisomes to the thylakoid membrane is described. |
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Keywords: | Biliproteins Phycobilisomes Phycoerythrin Porphyridium cruentum Red algae Thylakoid membranes |
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