Xie Yi, Xiao Gutian, Wang Shunde, et al. OLIGONUCLEOTIDE DIRECTED MULTI POINT SITE SPECIFIC MUTAGENESIS ——Five point Site specific Mutagenesis for Modifying Subtilisin E Gene[J]. 1997,(2).
Xie Yi, Xiao Gutian, Wang Shunde, et al. OLIGONUCLEOTIDE DIRECTED MULTI POINT SITE SPECIFIC MUTAGENESIS ——Five point Site specific Mutagenesis for Modifying Subtilisin E Gene[J]. 1997,(2).DOI:
This article represented a simple and efficient method for multi point site specific mutagenesis. The procedure includes: the annealing of a single stranded uracil containing DNA template with five oligonucleotide fragments at a time
in vitro synthesis and ligation
transforming JM109 of E.coli.
screening mutants by washing the filter at an increasing temprature. Using the approach
we have succeeded in obtaining several five point mutants in subti lisin E gene.A four point mutant was obtained at the same time. The result was confirmed by DNA sequenceing.
关键词
定点突变枯草杆菌蛋白酶E寡聚脱氧核苷酸
Keywords
multi point site specific mutagenesissubtilisin Eoligonucleotide