酵母真空カルボキシペプチダゼYの分類受容体は,VPS10遺伝子によってコードされています
E G Marcusson1, B F Horazdovsky, J L Cereghino
1Division of Cellular and Molecular Medicine, University of California, San Diego School of Medicine, La Jolla 92093-0668.
Cell
|May 20, 1994
まとめ
VPS10遺伝子産物であるVps10pは,酵母における真空タンパク質カルボキシペプチダゼY (CPY) を分類する受容体として作用する. このタンパク質は,CPYを真空球に誘導し,その分泌を防止するために不可欠です.
科学分野:
- 細胞生物学 細胞生物学
- 分子生物学は分子生物学である.
- イースト遺伝学 イースト遺伝学
背景:
- 細胞の機能には,真空のタンパク質分類が不可欠である.
- カーボキシペプチダゼY (CPY) は,Saccharomyces cerevisiae.に含まれる溶解性真空タンパク質の1つです.
- CPYの分類におけるVPS10遺伝子の役割は,以前は知られていなかった.
研究 の 目的:
- S. cerevisiae VPS10遺伝子の機能を明らかにする.
- Vps10pがCPYの分類を媒介するメカニズムを特定する.
- Vps10pとCPYの相互作用を特徴づける.
主な方法:
- 遺伝子変異分析 (vps10変異体).
- タンパク質の相互作用を研究するための化学的クロスリンク.
- タンパク質の局所化を決定するサブセルラー分断.
- CPYの分類信号を持つハイブリッドタンパク質の分析.
主要な成果:
- VPS10の突然変異は,CPYの分泌につながり,他の真空タンパク質は正しく分類されます.
- Vps10pは,CPYのゴルギ変異前駆体と直接相互作用する.
- Vps10pは,他のタンパク質と融合したCPYからの分類信号と結合します.
- Vps10pは,真空タンパク質の分類に関与する後期ゴルギの区画に局所する.
結論:
- VPS10は,CPYの真空分別のための特定の受容体 (Vps10p) をコードします.
- Vps10pは,その分類信号と相互作用することによって,CPYの分類を媒介する.
- Vps10pは,分類を容易にするため,ゴルギとプレスクーラー区間のサイクルの可能性が高い.
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