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Copper binding sites associated with photosystem 2 preparations

AuthorsBarón Ayala, Matilde; Arellano, Juan B. ; Schröder, Wolfgang P.; Lachica Garrido, M.; Chueca, Ana
Photosystem II
Issue DateJun-1993
CitationPhotosynthetica (1993) 28:195-204.
AbstractSome steps in the isolation method of photosystem 2 (PS2)-enriched particles (BBY) influenced the Cu content of the final preparation. In particular, the centrifugation at 10 000 x g used to remove starch after Triton X-100 treatment of the thylakoids, yielded starch-free BBY with a low copper content. This contrasted with the high Cu content of the starch-containing BBY. Differences in Cu levels of both preparations seemed thus to be related to the starch content of the sample. Four unidentified proteins were found in the starch fraction. They are probably new copper binding sites in the photosynthetic cell.
Publisher version (URL)http://www.ueb.cas.cz/ps/contents.htm
Appears in Collections:(EEZ) Artículos
(IRNASA) Artículos
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