高比活度α-~(32)PATP的酶法标记

    • 摘要: 以[γ-32P]GTP作磷酸供体通过四步酶反应制备了高比活度(>148PBq/mol)的[α-32P]ATP。用高效液相色谱法(HPLC)测定了[α-32P]ATP比活度,并对影响[α-32P]ATP比活度的诸因素作了分析。

       

      Abstract: THEENZYMATICPREPARATIONOF[α┐32P]ATPWITHHIGHSPECIFICACTIVITYWuFengboWangYishanYiMingguan(InstituteofAtomicEnergy,P.O.Box275(39),Beijing102413)ABSTRACTAmodifiedprocedureforpreparing[α-32P]ATPisdescribedwithwhich[γ-32P]GTPisusedasphosphatedonorinsteadof[γ-32P]ATP.Thespecificactivityoftheresulted[α-32P]ATPinourexperimentsisraisedgreatlyasto148PBq/molormore,withoutdecreasingtheyieldof[α-32P]ATPwhichisover93%basedon32Pi.ThespecificactivityismeasuredbyHPLCandthefactorsthatafectthespecificactivityof[α-32P]ATParediscussed.KeywordsEnzymaticpreparationSpecificactivity[γ-32P]GTP[α-32P]ATPHPLC

       

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