Molecules and Cells

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Fig. 2. During chloroplast evolution, the diverse transit peptides (TPs) might have arisen via selective assembly of a large pool of potential motifs responsible for the interaction with import factors that function at various steps in the import process in the cytosol and at the chloroplast. We propose that one or multiple molecular factors are involved in each step of protein import and that each of these factors is able to interact with multiple motifs.
Mol. Cells 2018;41:161~167
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