幸运赛马

    我国科学家揭示全新DNA复制起始位点调控机制
    时间: 2020-05-18来源:幸运赛马_幸运赛马官网-手机版 作者: 点击:

      dnafuzhishiyigequebaoyichuanxinxijingquechuandideshengmingguocheng。xibaozaidnahechengqianqig1qishi,fuzhiqishishibiefuhewushibieransezhishangdefuzhiweidian,jinyibuzhaomudnajiexuanmeimcm(minichromosome maintenance)deng,xingchengfuzhiqiantifuhewu,wanchengfuzhiqishiweidianderenzheng。erdangxibaojinrufuzhiqisqishi,beirenzhengdefuzhiqishiweidianbeixuanzexingdijihuoshiyong。zhenheshengwudnafuzhiqishiweidiandexuanzeshoudnaxuliehebiaoguanyichuanyinsugongtongdiaokong。muqian,biaoguanyichuanyinsuduiransezhishangdnafuzhiqishiweidiandexuanzejizhirengranbuqingchu。

      woguokexuejiafaxianhanyouzudanbaibiantih2a.zdehexiaotinenggoutongguozhijiejiehejiajihuameisuv420h1,cujinhexiaotishangdeh4zudanbaidi20weilaiansuanfashengerjiajihuaxiushi(h4k20me2)。erdaiyouh4k20me2xiushideh2a.zhexiaoti,nenggouzhaomufuzhiqiantifuhewuzhongdeorc1danbai(origin recognition protein 1),congerbangzhuransezhishangfuzhiqishiweidiandexuanze。jinyibudeyanjiufaxian,shouh2a.zdiaokongdefuzhiqishiweidianbiqitadefuzhiqishiweidianyougenggaodefuzhixinhao,bingpianxiangzaifuzhiqizaoqibeijihuoshiyong。 zongshangsuoshu,gaiyanjiuchanshuleyigexinyingdeyouh2a.zjiedaodednafuzhibiaoguanyichuandiaokongjizhi(h2a.z-suv420h1-h4k20me2-orc1),duilijiezhenheshengwudnafuzhiqishiweidiandexuanzetigonglexindeshijiao,tongshiyeweiweilaitantaodnafuzhiqishideyichangdiaokongzaizhongliufashengguochengzhongdezuoyongjizhitigonglexinsilu。



    来源:幸运赛马_幸运赛马官网-手机版

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