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Nucleic acids research

New specificity and yield enhancer of polymerase chain reactions.


PMID 10871414

Abstract

Tetramethylammonium (TMA) chloride, dimethyl sulfoxide and formamide are known to increase, under certain conditions, the specificity and efficiency of the polymerase chain reaction (PCR). We compared the ability of several TMA derivatives and some other reagents to increase the specificity of PCR and to improve the yield of amplification. A novel combination of the enhancer TMA and oxalate as anion is demonstrated to be a powerful enhancer of PCR. Addition of 2 mM TMA oxalate to the PCR mixture decreases the formation of non-specific DNA fragments and increases the yield of specific PCR products.

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