DNA中含有什么杂质会干扰PCR过程
DNA中含有什么杂质会干扰PCR过程
DNA中含有什么杂质会干扰PCR过程
DNA中含有什么杂质会干扰PCR过程
Types of inhibitors
Inhibitors may be present in the original sample,such as blood,
fabrics,tissues and soil but may also be added as a result of the
sample processing and DNA extraction techniques used.[1] Excess salts including KCl and NaCl,ionic detergents such as sodium deocycholate,sarkosyl and SDS,
ethanol,isopropanol and phenol among others,all contribute via
various inhibitory mechanisms,to the reduction of PCR efficiency.
以上来自维基百科,楼主自己翻一下厚.
若提取DNA时某些杂质如DNAase、RNAase、RNA等会对PCR产生影响;另外Taq酶、镁离子、DNTP也会产生影响DNA样本中夹杂蛋白质、乙醇也会干扰吧,一般怎么纯化蛋白质一般用氯仿变性提取,乙醇易挥发放入干燥器一段时间即可,我做实验的时候也用过离心的方法...
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若提取DNA时某些杂质如DNAase、RNAase、RNA等会对PCR产生影响;另外Taq酶、镁离子、DNTP也会产生影响
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DNA的PCR过程是严谨RNA污染的。