Frontiers of Agriculture in China >
Improvement of megaprimer method for site-directed mutagenesis and its application to phytase
Received date: 27 Sep 2008
Accepted date: 09 Oct 2008
Published date: 05 Mar 2009
Copyright
Site-directed mutagenesis is used extensively for probing gene function. In this paper we describe an improved megaprimer method to the site-directed mutagenesis of phytase from Aspergillus niger, which allowed the mutations to be performed more efficiently in less time than other traditional methods. Three rounds of PCR and two pairs of primers were required in this method, and additionally, the restriction enzyme Dpn I was used for the elimination of template instead of the gel purification in this process. The entire procedure was performed in one tube. Moreover, this method was easier for obtaining large mutant genes than other methods. We successfully carried out the site-directed mutagenesis of phytase by adopting this method.
Key words: site-directed mutagenesis; phytase; the single-stranded product; PCR
Haiqiang LU , Hongwei YU , Runfang GUO , Yingmin JIA . Improvement of megaprimer method for site-directed mutagenesis and its application to phytase[J]. Frontiers of Agriculture in China, 2009 , 3(1) : 43 -46 . DOI: 10.1007/s11703-009-0010-5
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