Multifaceted Roles of ALG-2 in Ca(2+)-Regulated Membrane Trafficking.

Multifaceted Roles of ALG-2 in Ca(2+)-Regulated Membrane Trafficking.
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DOI:
10.3390/ijms17091401
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发表时间:
2016-08-26
影响因子:
5.6
通讯作者:
Shibata H
Shibata H
中科院分区:
生物学2区
文献类型:
--
作者:
Maki M;Takahara T;Shibata H

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ALG-2(基因名称:PDCD 6)是一种五EF手型钙结合蛋白,以钙依赖性方式与多种蛋白质相互作用。ALG-2通过使用不同的疏水口袋识别富含Pro区域中不同类型的已识别基序,但其他未知的结合模式也用于非富含Pro的蛋白质。大多数ALG-2相互作用蛋白直接或间接与质膜或细胞器膜相关,涉及内体分选复合物转运所需(ESCRT)系统,外壳蛋白复合物II(COPII)依赖性ER-高尔基体囊泡转运,以及从膜受体到下游参与者的信号转导。ALG-2与靶标的结合可诱导蛋白质的构象变化。ALG-2二聚体还可以作为Ca 2+依赖性衔接子来桥接不同的伴侣并连接相互作用蛋白质的子网络。
ALG-2 (gene name: PDCD6) is a penta-EF-hand Ca2+-binding protein and interacts with a variety of proteins in a Ca2+-dependent fashion. ALG-2 recognizes different types of identified motifs in Pro-rich regions by using different hydrophobic pockets, but other unknown modes of binding are also used for non-Pro-rich proteins. Most ALG-2-interacting proteins associate directly or indirectly with the plasma membrane or organelle membranes involving the endosomal sorting complex required for transport (ESCRT) system, coat protein complex II (COPII)-dependent ER-to-Golgi vesicular transport, and signal transduction from membrane receptors to downstream players. Binding of ALG-2 to targets may induce conformational change of the proteins. The ALG-2 dimer may also function as a Ca2+-dependent adaptor to bridge different partners and connect the subnetwork of interacting proteins.
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