全生物の共通の祖先の実験的検証  過去のタンパク質を再現する

書誌事項

タイトル別名
  • Experimental Test on the Last Common Ancestor: Reproduction of the Ancient Proteins.
  • ゼン セイブツ ノ キョウツウ ノ ソセン ノ ジッケンテキ ケンショウ カコ ノ タンパクシツ オ サイゲン スル
  • Reproduction of the Ancient Proteins
  • 過去のタンパク質を再現する

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抄録

The results of an experimental test for verifying the hypothesis that the common ancestor of all living organisms (universal ancestor, commonote) was a hyperthermophile (Miyazaki, et al., 2001), are explained. In the experiment, mutant enzymes with ancestral aminoacids were made using a gene engineering technique. The mutant enzymes were purified and tested for thermostability. The mutant enzymes with ancestral aminoacids showed higher thermostability than the contemporary hyperthermophile enzyme. The results suggest that the common ancestor of all living organisms was a hyperthermophile. The argument related to the hyperthermophilic common ancestor hypothesis was reviewed with respect to the experimental test.

収録刊行物

  • 地学雑誌

    地学雑誌 112 (2), 197-207, 2003

    公益社団法人 東京地学協会

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