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  • Title: Differential uptake of photosynthetic and non-photosynthetic proteins by pea root plastids.
    Author: Yan X, Khan S, Hase T, Emes MJ, Bowsher CG.
    Journal: FEBS Lett; 2006 Nov 27; 580(27):6509-12. PubMed ID: 17101134.
    Abstract:
    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 III 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.
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