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PRECURSORS OF ONE INTEGRAL AND 5 LUMENAL THYLAKOID PROTEINS ARE IMPORTED BY ISOLATED PEA AND BARLEY THYLAKOIDS - OPTIMIZATION OF IN-VITRO ASSAYS
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UNSPECIFIED (1993) PRECURSORS OF ONE INTEGRAL AND 5 LUMENAL THYLAKOID PROTEINS ARE IMPORTED BY ISOLATED PEA AND BARLEY THYLAKOIDS - OPTIMIZATION OF IN-VITRO ASSAYS. PLANT MOLECULAR BIOLOGY, 23 (4). pp. 717-725. ISSN 0167-4412.
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Abstract
In vitro assays for the import of proteins by isolated pea thylakoids have been refined and optimised with respect to (a) the method of thylakoid preparation, (b) the concentration of thylakoids in the import assay, and (c) the pH and temperature of the import assay. As a result, the 23 kDa and 16 kDa proteins of the photosynthetic oxygen-evolving complex are imported with efficiencies approaching 100%; import of the third oxygen-evolving complex protein is also observed, albeit with lower efficiencies. We have also demonstrated import of three further thylakoid proteins: plastocyanin, the CF(o)II subunit of the ATP synthase, and the photosystem I subunit, PSI-N, using this import assay. Import of plastocyanin, PSI-N and the 33 kDa oxygen-evolving complex protein subunit requires the presence of stromal extract whereas the other three proteins are efficiently imported in the absence of added soluble proteins. Import into isolated barley thylakoids was achieved under identical assay conditions, although with somewhat lower efficiency than into pea thylakoids.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry S Agriculture > SB Plant culture |
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Journal or Publication Title: | PLANT MOLECULAR BIOLOGY | ||||
Publisher: | KLUWER ACADEMIC PUBL | ||||
ISSN: | 0167-4412 | ||||
Official Date: | November 1993 | ||||
Dates: |
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Volume: | 23 | ||||
Number: | 4 | ||||
Number of Pages: | 9 | ||||
Page Range: | pp. 717-725 | ||||
Publication Status: | Published |
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