NATURE Ne as April 25, 1953 pat mast be a punte ahd the weher a pyr midine for bonding bo MOLECULAR STRUCTURE OF ee pytutmdine ponton I: purine outen b te pyrane NUCLEIC ACIDS A structure for Deoxyribose Nucleic Acid is advance of publicae. Their mdel commit of thtee aned chains, wh the phosphates near the fibre akis. formed. it follow that if the sequence of bases on one chain Watson and hydroges atom it is tot ciear what force would hold the acda H has bccn found experimentally that the ratio of the a Crick, 1953 如“均如如 = Sructure as descnbed is fatber id-defineu and for this rease d are tnf fien for a ng comment on it wc can tcil. It s roughly comgwnble with the eperimental data we wish to put forward a radically dif. mot some of these deuils et the tells 人类科学发展历 nacic and This wtructure has two hele 史上的伟大里程碑。 o reade ith.5 linkages, The hee chains t Lated by a dya Full detaib of the structure, including the condtions as bn bu kng it, toge perpendicular to the fibre aus Boe sollow rig handed gelace, but owing to 出间 wm the Natonal Foundation for Infantile paralysIs C. Crick There i a residue e ss对C如 we he assumed as angle of )" between ad acent read 邮由A fibre au is 1o A As the phosphates lo them Paw I. wM Core. R.B. Mnr, 171346(1953). Phr t. Nar he struture could becae ℃ura.、和 The plan Auryw I Symp s tp Bot ), NKk Ac t Cene sngle base fromm ame chain be the tao le side by side with ideaal :-co-ofdinases One of m“11“Watson and Crick， 1953 人类科学发展历 史上的伟大里程碑