懂球帝

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了解一下什么是質粒么?看看這些吧
瀏覽次數:22發布日期:2019-12-12
   質粒存在于許多細菌以及酵母菌等生物中,是細胞染色體外能夠自主復制的很小的環狀DNA分子。

  質粒zhìlì(Plasmid)是附加到細胞中的非細胞的染色體或核區DNA原有的能夠自主復制的較小的DNA分子(即細胞附殖粒、又胞附殖粒)。大部分的質粒雖然都是環狀構型,它存在于許多細菌以及酵母菌等生物中,乃至于植物的葉綠體和線粒體等胞器中。然而,1984年,在Streptomyces coelicoler(天藍色鏈霉菌)等放線菌以及在Borrelia hermsii(赫氏蜱疏螺旋體)等原核生物中,又相繼發現線形質粒。

  TIANRANZHILIDEDNACHANGDUCONGSHUQIANJIANJIDUIZHISHUSHIWANJIANJIDUIDOUYOU。ZHILITIANRANCUNZAIYUZHEXIESHENGWULIMIAN,YOUSHIHOUYIGEXIBAOLIMIANKEYITONGSHIYOUYIZHONGNAIZHIYUSHUZHONGDEZHILITONGSHICUNZAI。ZHILIDETAOSHU(copy number)ZAIXIBAOLICONGDANYIDAOSHUQIANDOUYOUKENENG。YOUSHIYOUXIEZHILIHANYOUMOUZHONGKANGYAOJIYIN(RUDACHANGGANJUNZHONGJIUYOUHANYOUKANGSIHUANSUJIYINDEZHILI)。YOUYIXIEZHILIXIEDAIDEJIYINZEKEYIFUYUXIBAOEWAIDESHENGLIDAIXIENENGLI,NAIZHIYUZAIYIXIEXIJUNZHONGTIGAOTADEZHIBINGLI。YIBANLAISHUO,ZHILIDECUNZAIYUFOUDUISUZHUXIBAOSHENGCUNMEIYOUJUEDINGXINGDEZUOYONG。TASHIJIYINGONGCHENGZUICHANGJIANDEYUNZAITI。

  質粒懂球帝根據它們所帶有的基因以及賦于宿主細胞的特點可以分為六種不同的類型:

  1、KANGXINGZHILI:TAMENDAIYOUKANGXINGJIYIN,KESHISUZHUJUNDUIMOUXIEKANGJUNSUCHANSHENGKANGXING,RUDUIANJIXIAQINGMEISU,LVMEISUDENGCHANSHENGKANGXING。BUTONGDEXIJUNZHONGYEKEHANYOUXIANGTONGDEKANGXINGZHILI,RURP4ZHILIZAIJIADANBAOJUNSHUHEQITAXIJUNZHONGDOUCUNZAI。RZHILIHUANKEYITONGGUOGANRANDEXINGSHIZAIBUTONGZHONGDEXIJUNZHONGCHUANBO。

懂球帝  2、ZHIYUYINZI:KEYITONGGUOJIEHEZAIGONGTIHESHOUTIJIANCHUANDIYICHUANWUZHI。FYINZIYUEYOU1/3DEDNAGOUCHENGYIGEZHUANYIDNADECAOZONGZI,YUE35GEJIYIN,FUZEHECHENGHEZHUANGPEIXINGSANMAO。ZHEJIUSHIDNAZHUANYIQUYU,SHOUtraJJIYINCHANWUDEZHENGDIAOJIE。TAHUANJUYOUZHONGZUQUHEFUZHIQU。ZHONGZUQUHANYOUDUOGECHARUSHUNXU,TONGGUOZHEXIECHARUSHUNXUJINXINGTONGYUANZHONGZU。ZAIFUZHIQUYOULIANGGEFUZHIQISHIDIAN:YIGESHIOriV,GONGGEIFYINZIZAISUZHUZHONGZIZHUFUZHISHISHIYONG;LINGYIGESHIOriT,GONGJIEHESHIJINXINGGUNHUANFUZHIDEQISHIDIAN。

懂球帝  3、ColZHILI:DAIYOUBIANMADACHANGGANJUNSUDEJIYIN。DACHANGGANJUNSUKESHASIQITAXIJUN。

  4、JIANGJIEZHILI:ZHEZHONGZHILIBIANMAYIZHONGTESHUDANBAI,KESHISUZHUJUNDAIXIETESHUDEFENZI,RUJIABENHUOSHUIYANGSUAN。

懂球帝  5、QINRUXINGZHILI:ZHEXIEZHILISHISUZHUJUNJUYOUZHIBINGDENENGLI。RUTiZHILI,CISHIZAIGENAINONGGANJUNZHONGFAXIANDE,XIANJINGGUOJIAGONGYONGLAIZUOZHIWUZHUANJIYINDEYIZHONGCHANGYONGZAITI。

懂球帝  6、YINMIZHILI:BUXIANSHIRENHEBIAOXIANLEIXING,ZHUYAOTONGGUOWULIFANGFACAINENGFAXIAN。

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