^<31>Siの崩壊により生じた反跳^<31>P核を利用したAMPの無生物的合成

概要

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Twenty-five mg of 70-90% enriched ^<30>Si (SiO_2) were irradiated in a hydraulic conveyer at a thermal neutron flux of approx. 8.0×10^<13> n. cm.^<-2>sec.^<-1>. for 10 hr. Immediately after irradiation, 5μCi of ^<14>C-adenosine were added and allowed to decay all of the ^<31>Si for 2 days at room temperature. After this treatment, it was ascertained paper-chromatographycally and radio-autographycally that, a some part recoiled ^<31>P atoms were caught by adenosine molecules to yield 2' and/or 3' and 5'-AMP. An advantage expected from using the recoiled atoms in such a reaction is a predominance of production rather than destractive reaction. The authors propose that such an organic reaction seems to have been occurred in the primordial earth. The supposition was supported by the following facts. 1. Considerable amount of fast neutrons come on the earth even in nowadays. 2. Water is a very effective thermalizing agent for fast neutron. 3. Silica is the most abundant constitued of the soil.
社団法人日本動物学会の論文
1970-04-15