Hempel Franziska, Bozarth Andrew, Sommer Maik S, Zauner Stefan, Przyborski Jude M, Maier Uwe-G
Laboratory for Cell Biology, Philipps-University of Marburg, Karl-von-Frisch Strasse 8, D-35032 Marburg, Germany.
Biol Chem. 2007 Sep;388(9):899-906. doi: 10.1515/BC.2007.119.
Many algal groups evolved by engulfment and intracellular reduction of a eukaryotic phototroph within a heterotrophic cell. Via this process, so-called secondary plastids evolved, surrounded by three or four membranes. In these organisms most of the genetic material encoding plastid functions is localized in the cell nucleus, with the result that many proteins have to pass three, four, or even five membranes to reach their final destination within the plastid. In this article, we review recent models and findings that help to explain important cellular mechanisms involved in the complex process of protein transport into secondary plastids.
许多藻类类群是通过在异养细胞内吞噬真核光合生物并进行细胞内还原而进化的。通过这个过程，所谓的次生质体进化而来，被三或四层膜包围。在这些生物体中，大多数编码质体功能的遗传物质位于细胞核中，结果许多蛋白质必须穿过三、四甚至五层膜才能到达质体内的最终目的地。在本文中，我们综述了最近的模型和发现，这些有助于解释蛋白质运输到次生质体这一复杂过程中涉及的重要细胞机制。
