フォスホリピド生物合成のためのCDP-コリン経路の変異は,重要なフォスホリピド転送タンパク質の要件を回避します
A E Cleves1, T P McGee, E A Whitters
1Department of Microbiology, University of Illinois, Urbana-Champaign 61801.
Cell
|February 22, 1991
まとめ
SEC14pタンパク質は,酵母ゴルギ分泌機能に不可欠である. コリンキナーゼ (CKI) の破壊は,このSEC14pの要件を回避し,フォスフォリピド生物合成とゴルギ機能の間のリンクを明らかにしました.
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.
- バイオケミストリー バイオケミストリー
背景:
- SEC14pは酵母製のフォスファディチルノシトール (PI) /フォスファディチルコリン (PC) 転送タンパク質です.
- SEC14pは酵母菌のゴルギ分泌機能を刺激するために不可欠です.
研究 の 目的:
- SEC14p.の位置を調査するために.
- SEC14p.の必須要件を回避できる遺伝子を特定する.
- イーストのゴルギ機能に対するフォスフォリピド生物合成の影響を理解するために.
主な方法:
- 酵母ゴルギにおけるSEC14pの局所化研究.
- SEC14pの要件を回避するサプレッサー変異の遺伝子スクリーニング.
- コリンキナーゼ (CKI) の遺伝子破壊効果の分析.
主要な成果:
- SEC14pは Golgi.酵母に局所化することが判明しました.
- 6つの遺伝子の変異は,SEC14pの要件を回避しました.
- コリンキナーゼ (CKI) 遺伝子の破壊により,細胞はSEC14pから独立した.
- CKI遺伝子産物は,SEC14p機能に敵対する.
結論:
- SEC14pは,酵母ゴルギ膜のリンパ脂含有量を制御する.
- CDP-コリン経路によるバイオシンセシスは,酵母ゴルギ機能に影響を与えます.
- フォスフォリピド生物合成とSEC14p媒介のゴルギ調節との間に新しいリンクが存在する.
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