5,5-ジメチロキシルシフェリンからの黄色緑色と赤色の火虫の生物発光

Bruce R Branchini¹, Martha H Murtiashaw, Rachelle A Magyar

¹Department of Chemistry, Connecticut College, New London, Connecticut 06320, USA. brbra@conncoll.edu

Journal of the American Chemical Society

|March 7, 2002

まとめ

この研究では,甲虫の生物発光色を調査しています. 結果はマカプラのメカニズムを支持し,色の変化はタウトマーではなく,オキシルシフェリンの単一のケト形態から生じることを示唆しています.

科学分野:

バイオケミストリーバイオケミストリー
バイオフィジックス生物物理学
分子生物学は分子生物学である.

背景:

甲虫のルシフェラーゼは,一般的なルシフェリン基板を使用して,緑から赤に光を放つ.
以前のモデルでは,ケトエノールタウトマーまたはオキシルシフェリンの構造変化が光の色を決定することを提案していました.

研究の目的:

甲虫における生物発光色決定のメカニズムを調査する.
オキシルシフェリンの形状と光放射の色に関するマカプラの仮説を検証するために.

主な方法:

合成されたD-5,5-ジメチルルシフェリンアデニラート.
Photinus pyralisとクリックバケツのルシフェラーゼを用いた生物発光反応を触媒化した.
生物発光スペクトルを分析し,運動研究を行った.

主要な成果:

5,5-ジメチロキシルシフェリン,ケト形式に限定,光赤.
のルシフェラーゼは緑の光を生成し,クリックビートルのルシフェラーゼは赤の光を生成した.
オキシルシフェリンの単一のケト形式を含む実験データサポートメカニズム.

結論:

この研究は,火の生物発光色に関するマカプラのメカニズムを支持する最初の実験的証拠を提供します.
生物発光色の変化は,オキシルシフェリンの単一のケト形態の構成状態によって説明される可能性があります.

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