細胞と細胞とをしっかり“接着”しているタンパク質がカドヘリン。それを研究することでがんや認知症などの治療にも役立てようとしている現状を取り上げた番組が先日放映されました。
カドヘリンの接着力を示すために,取材した眞鍋かをりさんは手の甲をしっかりつねられてしまいました。眞鍋さんの『カドヘリンが無かったら… 私はスライムだったかもしれません』というコメントが効いています。
今回取り上げたのはカドヘリン・スーパーファミリーの中で古典的カドヘリンに分類され,主に上皮で発現するE-カドヘリンです。
◎参考文献・Webページ
ハツカネズミのE-カドヘリン 1edh(左が有機概念図I/O値順,右が必須・非必須区別)
アフリカツメガエルのC-カドヘリン 1l3w(PDBj「今月の分子 99:カドヘリン」(2008/03)で紹介)
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Asn | Ile | Thr | Thr | Asp | Pro | Glu | Ser | Asn | Gln | Gly | Ile | Leu | Thr | Thr | Ala | Lys | Gly | Leu | Asp | Phe | Glu | Leu | Arg | Lys |
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Leu | Ser | Arg | Gly | Glu | Lys | Ile | Ile | Ser | Leu | Val | Ala | Gln | Asp | Pro | Asp | Lys | Gln | Gln | Ile | Gln | Lys | Leu | Ser | Tyr |
Phe | Ile | Gly | Asn | Asp | Pro | Ala | Arg | Trp | Leu | Thr | Val | Asn | Lys | Asp | Asn | Gly | Ile | Val | Thr | Gly | Asn | Gly | Asn | Leu |
Asp | Arg | Glu | Ser | Glu | Tyr | Val | Lys | Asn | Asn | Thr | Tyr | Thr | Val | Ile | Met | Leu | Val | Thr | Asp | Asp | Gly | Val | Ser | Val |
Gly | Thr | Gly | Thr | Gly | Thr | Leu | Ile | Leu | His | Val | Leu | Asp | Val | Asn | Asp | Asn | Gly | Pro | Val | Pro | Ser | Pro | Arg | Val |
Phe | Thr | Met | Cys | Asp | Gln | Asn | Pro | Glu | Pro | Gln | Val | Leu | Thr | Ile | Ser | Asp | Ala | Asp | Ile | Pro | Pro | Asn | Thr | Tyr |
Pro | Tyr | Lys | Val | Ser | Leu | Ser | His | Gly | Ser | Asp | Leu | Thr | Trp | Lys | Ala | Glu | Leu | Asp | Ser | Lys | Gly | Thr | Ser | Met |
Leu | Leu | Ser | Pro | Thr | Gln | Gln | Leu | Lys | Lys | Gly | Asp | Tyr | Ser | Ile | Tyr | Val | Leu | Leu | Ser | Asp | Ala | Gln | Asn | Asn |
Pro | Gln | Leu | Thr | Val | Val | Asn | Ala | Thr | Val | Cys | Ser | Cys | Glu | Gly | Lys | Ala | Ile | Lys | Cys | Gln |