Journal
FEBS LETTERS
Volume 580, Issue 27, Pages 6509-6512Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.febslet.2006.10.057
Keywords
root plastids; protein import; photosynthetic; non-photosynthetic; transit peptide; Pisum sativum
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The photosynthetic proteins RuBiSCO, ferredoxin I and ferredoxin NADP+-oxidoreductase (pFNR) were efficiently imported into isolated pea chloroplasts but not into pea root plastids. By contrast non-photosynthetic ferredoxin III and heterotrophic FNR (hFNR) were efficiently imported into both isolated chloroplasts and root plastids. Chimeric ferredoxin I/III (transit peptide of ferredoxin I attached to the mature region of ferredoxin III) only imported into chloroplasts. Ferredoxin III/I (transit peptide of ferredoxin fit attached to the mature region of ferredoxin I) imported into both chloroplasts and root plastids. This suggests that import depends on specific interactions between the transit peptide and the translocon apparatus. (c) 2006 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
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