Flügge U I
Botanisches Institut der Universität zu Köln, Lehrstuhl II, Gyrhofstr. 15, D-50931 Köln, Germany.
Curr Opin Plant Biol. 1998 Jun;1(3):201-6. doi: 10.1016/s1369-5266(98)80105-2.
Communication between plastids and the surrounding cytosol occurs via the plastidic envelope membrane. Recent findings show that the outer membrane is not as freely permeable to low molecular weight solutes as previously thought, but contains different channel-like proteins that act as selectivity filters. The inner envelope membrane contains a variety of metabolite transporters that mediate the exchange of metabolites between both compartments. Two new classes of phosphate antiporters were recently described that are different in structure and function from the known triose phosphate/phosphate translocator from chloroplasts. In addition, a cDNA coding for an ATP/ADP antiporter from plastids was isolated that shows similarities to a bacterial adenylate translocator.
质体与周围细胞质之间的通讯通过质体包膜进行。最近的研究结果表明，外膜对低分子量溶质的通透性并不像之前认为的那样自由，而是含有不同的通道样蛋白，这些蛋白起着选择性过滤器的作用。内膜含有多种代谢物转运蛋白，介导两个区室之间代谢物的交换。最近描述了两类新的磷酸转运体，它们在结构和功能上与已知的叶绿体磷酸丙糖/磷酸转运体不同。此外，还分离出了一个编码质体ATP/ADP转运体的cDNA，它与细菌腺苷酸转运体有相似之处。
