Plant Physiology, University of Kaiserslautern, Erwin-Schrödinger-Str., D-67663 Kaiserslautern, Germany.
Trends Plant Sci. 2011 Sep;16(9):507-15. doi: 10.1016/j.tplants.2011.04.001. Epub 2011 May 31.
Adenine nucleotides play a vital role in plant metabolism and physiology, essentially representing the major energy currency of the cell. Heterotrophic cells regenerate most of the ATP in mitochondria, whereas autotrophic cells also possess chloroplasts, representing a second powerhouse for ATP regeneration. Even though the synthesis of these nucleotides is restricted to a few locations, their use is nearly ubiquitous across the cell and thereby highly efficient systems are required to transport these molecules into and out of different compartments. Here, we discuss the location, biochemical characterization and evolution of corresponding transport systems in plants. We include recent scientific findings concerning organellar transporters from plants and algae and also focus on the physiological importance of adenine nucleotide exchange in these cells.
腺嘌呤核苷酸在植物代谢和生理学中起着至关重要的作用，本质上代表了细胞的主要能量货币。异养细胞在线粒体中再生大部分的 ATP，而自养细胞还拥有叶绿体，代表着 ATP 再生的第二个能量工厂。尽管这些核苷酸的合成仅限于少数几个位置，但它们在细胞中的使用几乎无处不在，因此需要高效的系统将这些分子运进和运出不同的隔室。在这里，我们讨论了植物中相应转运系统的位置、生化特性和进化。我们包括了关于植物和藻类细胞器转运蛋白的最新科学发现，并重点关注了这些细胞中腺嘌呤核苷酸交换的生理重要性。
