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质粒DNA小量提取试剂盒

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  • 77.78/

上海莱枫生物科技有限公司
18012236082 021-64810180
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  • Brand  lifefeng
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  • Main Business:PCR,核酸纯化,核酸电泳
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Last Updated 2025-08-12 18:07

质粒DNA小量提取试剂盒

质粒DNA小量提取试剂盒采用SDS碱裂解法,结合硅胶膜选择性吸附DNA的方法,适合从1-4 ml细菌培养物中提取多至20 μg质粒DNA。纯化的质粒DNA适合用于酶切、PCR、测序、转化和转染肿瘤细胞。
本试剂盒改进了裂解条件(Buffer P2),避免菌量极少时或者菌液过度老化时可能出现的单链质粒DNA;优化了中和环境 (Buffer P3),彻底去除游离SDS,避免因SDS残留导致的酶切不完全或弥散、转染效率低等情况。

产品使用说明书:质粒DNA小量提取试剂盒



使用不同公司的质粒DNA提取试剂盒从同一份菌液中提取pUC19M: DL2000, 1.5% agarose
1: 莱枫DK301 2-4: 其他公司同类产品
2:三种带型从下到上分别为超螺旋构型、线性和nicked构型。
pUC19是2686bp的小型质粒,其超螺旋构型在1.5%琼脂糖凝胶中电泳迁移率接近2kb线性双链DNA。
莱枫DK301明显减少了对超螺旋质粒DNA的损伤。

使用DK301提取pTWIN1(7375BP),使用三种凝胶浓度电泳鉴定
每张图片左侧为DL15,000,右侧为提取的质粒DNA
1. 0.5%琼脂糖凝胶,pTWIN1以超螺旋构型为主;
2. 0.8%琼脂糖凝胶,pTWIN1以超螺旋构型为主;
3. 1.2%琼脂糖凝胶,pTWIN1为松散为环状构型,迁移率明显大于线性构型和超螺旋构型;
使用相对较高的琼脂糖凝胶会促使质粒超螺旋构型松散为环状构型,此时质粒DNA为封闭环或者带切刻,电泳迁移率小于线性构型和超螺旋构型。

Company Name 上海莱枫生物科技有限公司
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Business Scope PCR,核酸纯化,核酸电泳
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