Also known as the Watson-Crick model, this is a model proposed by JD Watson and FHC Crick as the three-dimensional structure of DNA in 1953 (Figure). It was devised based on X-ray diffraction data by MHF Wilkins and R Franklin, and base composition analysis by E. Chargaff and others. Its features include the following: (1) Two DNA strands are arranged in opposite directions to each other, forming a right-handed double helix with one turn of 10 bases. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
ワトソン=クリックのモデルともいう。1953年に,J.D.ワトソンとF.H.C.クリックがDNAの立体構造として提唱したモデル(図)。ウィルキンズM.H.F.WilkinsやフランクリンR.E.FranklinによるX線回折データとE.シャルガフなどの塩基組成分析を基にして考えられたものである。その特徴として以下のことが挙げられる。(1)2本のDNA鎖が互いに逆向きに並び,10塩基で1回転の右巻き二重らせんを作っている。
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