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Protein import into plastids

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Cell and Molecular Biology of Plastids

Part of the book series: Topics in Current Genetics ((TCG,volume 19))

Abstract

Most chloroplast proteins are synthesized as preproteins with N-terminal transit sequences andimported from the cytosol. Protein translocons at the outer (Toc) and inner membranes of the chloroplast(Tic) recognize the presequence and enable the transfer of the polypeptide across the dual membraneenvelope. After the initial characterization of the translocon components, research focused on theimport mechanisms and their regulation. Recent research taking advantage of the Arabidopsissystem has demonstrated the existence of substrate specific import sub-pathways in the general importpathway. New discoveries indicate that glycosylated proteins may take an entirely different pathwayvia the endoplasmic reticulum and the Golgi apparatus. This review will discuss the known importcomponents in the light of the exciting new discoveries.

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  1. Laboratoire de Physiologie Végétale, Institut de Biologie, Université de Neuchâtel, Rue Emile-Argand 11, 2009, Neuchâtel, Switzerland

    Birgit Agne & Felix Kessler

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  1. Birgit Agne
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  2. Felix Kessler
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Agne, B., Kessler, F. (2007). Protein import into plastids. In: Bock, R. (eds) Cell and Molecular Biology of Plastids. Topics in Current Genetics, vol 19. Springer, Berlin, Heidelberg. https://doi.org/10.1007/4735_2007_0237

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