Journal Article

Crystallization of Photosystem I Complexes from the Thermophilic Cyanobacterium, <i>Synechococcus vulcanus</i>

Kazuhiko Satoh, Akihisa Kamiesu, Hirokazu Egashira, Yoshinobu Yano, Yasuhiro Kashino and Hiroyuki Koike

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 40, issue 1, pages 96-99
Published in print January 1999 | ISSN: 0032-0781
Published online January 1999 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/oxfordjournals.pcp.a029480
Crystallization of Photosystem I Complexes from the Thermophilic Cyanobacterium, Synechococcus vulcanus

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PSI complexes were isolated from the thermophilic cyanobacterium, Synechococcus vulcanus, by mild detergent treatment of the thylakoid membranes, purified by sucrose-density gradient centrifugation, and then crystallized. High resolution SDS-PAGE revealed the presence of the product of the psaI gene in S. vulcanus PSI complexes and crystals. Crystals of the PSI complexes retained all of the components of electron carriers and subunit polypeptides (including PsaX) known in cyanobacteria.

Keywords: Crystallization; Photosystem I complexes; psaI; psaX; Synechococcus vulcanus; Thermophilic cyanobacteria

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Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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