チッキーの卵子型遺伝子には,少なくとも6つの間接配列が含まれています

J F Catterall, J P Stein, E C Lai

Nature

|March 22, 1979

まとめ

研究者らは,卵子コイド遺伝子を含むチキンDNAをクローンした. 分析により,その遺伝子が明らかになった.

科学分野:

分子生物学は分子生物学である.
遺伝学遺伝学とは
バイオケミストリーバイオケミストリー

背景:

オオムコイド遺伝子は,鳥類の卵殻形成を理解する上で極めて重要です.
以前の研究では,タンパク質製品に焦点を当てていたが,遺伝子構造はほとんど特徴づけられていなかった.

研究の目的:

チッキーの卵巣型遺伝子の5'-部分をクローンし,特徴づけること.
介在する配列の存在と数を含む,オオムコイド遺伝子の構造的組織を調査する.

主な方法:

15キロ塩基対のEcoRIニワトリのDNA断片をクローン化して,インビトロ包装を用いてオオムコイド遺伝子を含んだラムダファグチャロン4Aに.
クローンされたDNA断片の制限マッピング.
DNA構造の電子顕微鏡分析.

主要な成果:

15キロ塩基対のDNA断片を成功裏にクローンし,その中にオオムコイド遺伝子の5'-部分と終末コードンが含まれています.
制限マッピングと電子顕微鏡検査により,卵巣状の遺伝子内に少なくとも6つの干渉配列 (イントロン) の存在が確認されました.
クローンされたDNA断片は,終末コードン (UGA) を取り囲み,構造遺伝子の5'-領域に広がります.

結論:

鶏の卵子型遺伝子は,干渉する配列によって広く中断されます.
この発見は,鳥類のオオムコイド遺伝子発現と調節に関するさらなる研究のための基盤を提供します.
クローンされたDNA断片は,遺伝子構造と進化を調査するための貴重な資源として機能します.

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