Sec9は酵母SNARE複合体のSNAP-25のような成分で,エクソサイトーシスにおけるSec4機能の効果因子である可能性がある
P Brennwald1, B Kearns, K Champion
1Department of Cell Biology, Yale University School of Medicine, New Haven, Connecticut 06520-8002.
Cell
|October 21, 1994
まとめ
研究者はSec4エフェクター変異体を研究することによって,Golgi後輸送の重要なレギュレータとしてSEC9を特定しました. SEC9はSNAP-25に相当する酵母であり,膀の融合と酵母細胞の標的化に不可欠である.
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.
- 遺伝学 遺伝学とは
背景:
- Sec4は,酵母におけるゴルギ後の膀輸送に不可欠なGTPaseである.
- Sec4エフェクターを理解することは,制御されたエクソサイトーシスのメカニズムの解明に不可欠です.
研究 の 目的:
- ゴルギ後輸送に関与する新しいSec4エフェクターを特定する.
- 識別されたエフェクターの機能と局所を特徴付けるには,SEC9.9.
主な方法:
- Sec4エフェクタドメインの変異体の高複製抑制スクリーン.
- SEC9を既知のタンパク質と比較したシーケンスホモロジー分析.
- SEC9および関連するタンパク質の細胞局所化研究.
- タンパク質とタンパク質の相互作用の生化学分析.
主要な成果:
- SEC9はSec4エフェクタドメイン変異体の高複製抑制剤として特定されました.
- SEC9はゴルギ後伝送に不可欠であり,神経細胞のSNAP-25.2とシーケンスの類似性を共有しています.
- SEC9はプラズマ膜に定着し,SNARE複合体の成分と結合する.
- SEC9はSNAP-25の酵母ホモログであり,膀ターゲティングと融合における重要な役割を果たしています.
結論:
- SEC9はSNAP-25の酵母同種で,膀輸送に重要な役割を果たしています.
- SNARE複合体は,膀輸送中にSec4/Ypt1/Rab GTPasesによって調節される可能性が高い.
- この研究は,種間の膀の密輸の保存されたメカニズムについての洞察を提供します.
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