• 我要登录|
  • 免费注册
    |
  • 我的丁香通
    • 企业机构:
    • 成为企业机构
    • 个人用户:
    • 个人中心
  • 移动端
    移动端
丁香通 logo丁香实验_LOGO
搜实验

    大家都在搜

      大家都在搜

        0 人通过求购买到了急需的产品
        免费发布求购
        发布求购
        点赞
        收藏
        wx-share
        分享

        Improved Alcohol Precipitation of DNA

        互联网

        888
         
         

        ECK

        Description

        This method was suggested in a BRL "Focus" article several years ago (Zeugin & Hartley, 1985). It is a useful way to avoid coprecipitation of proteins and accumulation of salt in the final dried preparation.

        Protocol

        1. Crude preparations: Add 0.5 volumes of 7.5 M NH4 OAc.

        Pure preparations: Add 0.1 volumes of the same.

        2. Add an amount of 95% ethanol equal to 2.5 times the new volume.

        3. Continue per your favorite protocol.

        Note that a subsequent BRL article (-, 1982) pointed out that precipitation in the cold is unnecessary. The process is an irreversible one, and takes place at room temperature, albeit somewhat more slowly. The same article shows that incubation at -70¡ actually inhibits complete precipitation.

        References

        "DNA Precipitation in the Presence of Ammonium Acetate", Focus 4(3), 12, 1982.

        J.A. Zeugin & J.L. Hartley, "Ethanol Precipitation of DNA", Focus 7(4), 1-2, 1985.

         

        ad image
        提问
        扫一扫
        丁香实验小程序二维码
        实验小助手
        丁香实验公众号二维码
        扫码领资料
        反馈
        TOP
        打开小程序