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FEBS Lett. 2010 Oct 8;584(19):4138-44. doi: 10.1016/j.febslet.2010.08.053. Epub 2010 Sep 7.

Interplay between the cpSRP pathway components, the substrate LHCP and the translocase Alb3: an in vivo and in vitro study.

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1
Molecular Biology of Plant Organelles, Ruhr-University Bochum, Bochum, Germany.

Abstract

The chloroplast signal recognition particle (cpSRP) and its receptor, cpFtsY, posttranslationally target the nuclear-encoded light-harvesting chlorophyll-binding proteins (LHCPs) to the translocase Alb3 in the thylakoid membrane. In this study, we analyzed the interplay between the cpSRP pathway components, the substrate protein LHCP and the translocase Alb3 by using in vivo and in vitro techniques. We propose that cpSRP43 is crucial for the binding of LHCP-loaded cpSRP and cpFtsY to Alb3. In addition, our data suggest that a direct interaction between Alb3 and LHCP contributes to the formation of this complex.

PMID:
20828566
DOI:
10.1016/j.febslet.2010.08.053
[Indexed for MEDLINE]
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