Research Institute for Bioresources, Okayama University, Kurashiki, Okayama, Japan.
Int Rev Cell Mol Biol. 2010;280:185-218. doi: 10.1016/S1937-6448(10)80004-8. Epub 2010 Mar 18.
Plastids change their morphology dynamically in response to environmental conditions and developmental status. Related to these plastid dynamics, the quality and quantity controls of proteins are necessary. Therefore, proteases are important as key regulators in almost all processes during the conversion of plastid types and the maintenance of plastid homeostasis. Recent progress in this field has revealed that various proteases and peptidases act on plastids. Results of the studies indicate that the vast majority of plastid proteases are homologous to prokaryotic ones because plastids are thought to originate from endosymbiosis of ancestral cyanobacteria. Moreover, the diversification of subunits of several plastid proteases has been revealed along with new insights into the functions of these homologues. This review provides basic information related to plastid proteases and the current view of their physiological roles in plastid homeostasis and biogenesis.
质体在响应环境条件和发育状态时会动态改变其形态。与这些质体动态相关的是，蛋白质的质量和数量控制是必要的。因此，蛋白酶作为几乎所有质体类型转换和质体内稳态维持过程中的关键调节剂是很重要的。该领域的最新进展表明，各种蛋白酶和肽酶作用于质体。研究结果表明，绝大多数质体蛋白酶与原核生物的蛋白酶同源，因为质体被认为起源于祖先蓝细菌的内共生体。此外，随着对这些同源物功能的新认识，几种质体蛋白酶的亚基多样性也被揭示出来。本综述提供了与质体蛋白酶相关的基本信息，以及目前对其在质体内稳态和生物发生中的生理作用的看法。
