隔離された腸のブラシの境界からのF-アクチンとカルモジュリン結合タンパク質は,スペクトリンに関連する形態学を持っています
Cell
|April 1, 1982
まとめ
新種のタンパク質複合体であるTW 260/40は,鶏の腸内細胞から精製されました. このF-アクチン結合タンパク質は,端末網の組織に重要な役割を果たし,カルモジュリンと相互作用し,子膜構造に影響を与えます.
科学分野:
- 細胞生物学 細胞生物学
- バイオケミストリー バイオケミストリー
- 分子生物学は分子生物学である.
背景:
- 鶏の腸内皮質細胞の末端網は,高分子量タンパク質複合体を含み,TW 260/240と指定されています.
- この複合体は,2つのポリペプチド (260,000 と 240,000 Da) で構成されており,端末網の組織に不可欠です.
研究 の 目的:
- TW260/240タンパク質複合体を浄化し特徴づけること.
- その生化学的および構造的性質を調査するために.
- TW 260/240を他の既知のアクチン結合タンパク質と比較し,細胞組織におけるその役割を決定する.
主な方法:
- 鶏の腸内皮質細胞からタンパク質を精製する.
- 超構造分析のための回転シャドーリング.
- F-アクチンの結合測定法.
- カルモジュリンとの相互作用に関する研究.
- TW 260/240に対する抗体を用いた免疫光顕微鏡検査.
- フィラミン,アクチン結合タンパク質 (ABP),スペクトリン,飼料との比較.
主要な成果:
- TW 260/240は精製され,2つのポリペプチドの複合体として特徴づけられました.
- F-アクチン結合タンパク質として機能し,カルモジュリンと相互作用する.
- 超構造分析により,長い,柔軟な,二本鎖の棒が明らかになった.
- TW 260/240は,滑らかな筋肉のフィラミンとマクロファージのABPとは異なるが,スペクトリンとフードリンとの類似性を共有している.
- 免疫光は,TW 260/240が,ストレス繊維とは異なる亜膜組織に関与していることを示しました.
結論:
- TW 260/240は,鶏の腸内皮質細胞の端末網の組織に関与する新しい,高分子量,棒状のアクチン結合タンパク質です.
- それは,おそらくスペクトリンと飼料と関連しているアクチン結合タンパク質の明確なクラスを表しています.
- このタンパク質ファミリーは,非筋肉細胞における亜膜微細繊維構造のカルモジュリン制御を媒介する可能性があります.
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