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Protein import across chloroplast envelopes

机译:蛋白质跨叶绿体包膜导入

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摘要

The vast majority of chloroplast proteins is nuclear encoded and cytoplasmically expressed as precursor proteins. As a consequence preproteins destined for the organelle interior need to be posttranslationally imported into the chloroplast across both envelope membranes. The translocation involves two distinct import complexes at the outer and inner envelope membrane in cooperation with soluble factors in the cytosol and the stroma. Within the last years several proteins have been identified as members of the chloroplast import machinery, and understanding of the import process is rising.
机译:绝大多数叶绿体蛋白是核编码的,并在细胞质中表达为前体蛋白。结果,发往细胞器内部的预蛋白需要跨两个包膜翻译后导入叶绿体中。易位涉及在胞膜和内膜中的可溶性因子与外包膜和内包膜的两个截然不同的输入复合体。在过去的几年中,已经确定了几种蛋白质是叶绿体进口机制的成员,并且对进口过程的理解正在提高。

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