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Prediction of DNA-binding Sites in Streptococcus agalactiae GlnR Factor and Construction of glnR Mutant Gene
Author(s): XIA Jie, YI Yi, WANG Jia, YANG Jun, HUANG Xi, HUANG Cui-ji, WU Shi-hua
Pages: 5902-
5905
Year: 2013
Issue:
23
Journal: Hubei Agricultural Sciences
Keyword: Streptococcus agalactiae; DNA binding sites; overlap PCR; bioinformatics;
Abstract: 利用生物信息学的方法对无乳链球菌(Streptococcus agalactiae)GlnR因子与DNA结合的位点进行预测,筛选出GlnR因子中与DNA结合的关键位点的氨基酸残基R47和R48.然后利用重叠PCR的方法将glnR基因上的第139~144位上的碱基CGCCGC突变为GCGGCG,使其编码的2个精氨酸残基突变为丙氨酸残基,将突变基因片段TA克隆至PMD 18-T载体上进行测序验证.测序结果表明,利用重叠PCR成功突变了这6个碱基,为后续研究GlnR因子的突变位点对DNA结合的影响提供了参考.
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