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MATCAP オキシトシナーゼによる微小管の翻訳後の改変

  • 0Oncode Institute, Division of Biochemistry, Netherlands Cancer Institute, 1066CX Amsterdam, Netherlands.
Clinical Neuroscience (new York, N.y.) +

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2022年4月28日

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2022年4月28日

PubMedで要約を見る

まとめ

この要約は機械生成です。

マイクロチューブル関連チロシンカルボキシペプチダゼ (MATCAP) は,チロシネーション- チロシネーションサイクルに不可欠な,新たに特定された酵素である. 欠乏すると小頭症と神経形成の欠陥が生じ 脳発達におけるその役割を強調します

科学分野

  • 細胞生物学
  • 分子生物学
  • 神経科学

背景

  • オキシトシネーション-チロシネーションサイクルはα-チューブリンを調節し,細胞機能に影響を与えます.
  • ヴァソヒビン-SVBP複合体はオキシトシネーションを媒介することが知られているが,他の酵素も存在する.

研究 の 目的

  • オキシトシネーション-チロシネーション経路に関与する新しい酵素を特定する.
  • 新しく発見されたオキソシネート酵素の機能とメカニズムを明らかにする.

主な方法

  • ハプロイド遺伝子スクリーンは,未知のタンパク質を特定するために使用されました.
  • 構造分析にはX線結晶学と冷凍電子顕微鏡を用いた.
  • ネズミのモデルで遺伝子操作 (コデレーション) を行いました.

主要な成果

  • マイクロチューブル関連チロシンカルボキシペプチダゼ (MATCAP) は重要なオキゾーシン化酵素として特定されました.
  • MATCAPの構造,メカニズム,基板特異性,および微小管の相互作用が特徴付けられました.
  • MATCAPとSVBPの配分は,SVBPのみの廃止とは異なり,実行可能であったが,小頭症と行動異常をもたらした.

結論

  • MATCAPは,α-チューブリンオキシトシネーション-チロシネーションサイクルの,以前には注釈されていない重要な構成要素である.
  • MATCAPは神経生成と脳の発達に不可欠な役割を果たし,それが存在しない場合の小頭症が証明されています.
  • オキシトシネーション-チロシネーションサイクルは正常な脳形成に不可欠です.

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