動原体とは？ わかりやすく解説

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どうげん‐たい【動原体】

読み方：どうげんたい

分裂期の染色体上に形成されるキネトコアのこと。→細胞分裂

[補説] セントロメア（染色体のくびれた部分）を動原体と呼ぶこともある。

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セントロメア

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動原体

英訳・(英)同義/類義語：centromere, Kinetochore complex

細胞分裂の際に染色体に紡錘糸が接着する部分。
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ウィキペディア
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ウィキペディアウィキペディア

動原体

出典: フリー百科事典『ウィキペディア（Wikipedia）』 (2023/08/25 05:35 UTC 版)

動原体（どうげんたい）またはキネトコア（英: kinetochore、[kɪˈnɛtəkɔːr]、[-ˈniːtəkɔːr]）は、真核生物の細胞において、複製された染色分体に結合する円盤型のタンパク質構造であり、細胞分裂時に姉妹染色分体を引き離すために紡錘糸が結合する部位である[1]。キネトコアはセントロメア上で組み立てられ、有糸分裂と減数分裂時に染色体を紡錘体の微小管ポリマーへ連結する。また、キネトコアのタンパク質は姉妹染色分体をつなぎとめておくのを助け、染色体の編集にも関与する[2]。


出典
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[続きの解説]

「動原体」の続きの解説一覧

Wiktionary日本語版（日本語カテゴリ）
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動原体

出典:『Wiktionary』 (2021/08/14 08:46 UTC 版)

名詞

動 原 体（どうげんたい）

  1. キネトコアに同じ。英語 kinetochore の翻訳。
  2. セントロメアに同じ。英語 centromere の翻訳。

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