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您现在的位置:懂球帝 >> 技术文章 >> 了解一下什么是质粒么?看看这些吧
了解一下什么是质粒么?看看这些吧
浏览次数:107发布日期:2019-12-12
   质粒存在于许多细菌以及酵母菌等生物中,是细胞染色体外能够自主复制的很小的环状DNA分子。

  质粒zhìlì(Plasmid)是附加到细胞中的非细胞的染色体或核区DNA原有的能够自主复制的较小的DNA分子(即细胞附殖粒、又胞附殖粒)。大部分的质粒虽然都是环状构型,它存在于许多细菌以及酵母菌等生物中,乃至于植物的叶绿体和线粒体等胞器中。然而,1984年,在Streptomyces coelicoler(天蓝色链霉菌)等放线菌以及在Borrelia hermsii(赫氏蜱疏螺旋体)等原核生物中,又相继发现线形质粒。

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  质粒根据它们所带有的基因以及赋于宿主细胞的特点可以分为六种不同的类型:

  1、KANGXINGZHILI:TAMENDAIYOUKANGXINGJIYIN,KESHISUZHUJUNDUIMOUXIEKANGJUNSUCHANSHENGKANGXING,RUDUIANJIBIANQINGMEISU,LVMEISUDENGCHANSHENGKANGXING。BUTONGDEXIJUNZHONGYEKEHANYOUXIANGTONGDEKANGXINGZHILI,RURP4ZHILIZAIJIADANBAOJUNSHUHEQITAXIJUNZHONGDOUCUNZAI。RZHILIHAIKEYITONGGUOGANRANDEXINGSHIZAIBUTONGZHONGDEXIJUNZHONGCHUANBO。

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  3、ColZHILI:DAIYOUBIANMADACHANGGANJUNSUDEJIYIN。DACHANGGANJUNSUKESHASIQITAXIJUN。

  4、JIANGJIEZHILI:ZHEIZHONGZHILIBIANMAYIZHONGTESHUDANBAI,KESHISUZHUJUNDAIXIETESHUDEFENZI,RUJIABENHUOSHUIYANGSUAN。

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

懂球帝  6、YINMIZHILI:BUXIANSHIRENHEBIAOXIANLEIXING,ZHUYAOTONGGUOWULIFANGFACAINENGFAXIAN。

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