The Sequence Analysis and Prediction of σ54 Promoter in Bacteria
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摘要: 对实验确定的168条σ54启动子序列进行保守性分析,获得两个保守的区域-24区域和-12区域,均为最保守的功能元件。选取保守性最大的17个保守位点的三联体频数作为参数,引入伪计数构建位置权重矩阵,对168条σ54启动子进行预测,分别从编码区和汇聚非编码区共选取168条序列组成阴性集。使用Jackknife交叉验证法对模型进行检验,整体准确度达到82.0%,为σ54启动子的理论和实验研究提供新信息。Abstract: By analyzing the 168 experimental-confirmed σ54 promoter sequences, two conservative regions that are -24 and -12 regions are obtained. The trimer frequency at 17 positions in these conservative regions is selected as inputting parameter. By adding pseudo-count into position weight matrix, the σ54 promoter can be predicted. The 168 negative sequences are extracted from coding regions and convergent intergenic regions. In Jackknife cross-validation, the overall accuracy reaches to 82.0%, suggesting that the model can be further used in the theoretical and experimental study of σ54 promoter.
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Keywords:
- bacteria /
- conservative /
- position weight matrix /
- promoter
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期刊类型引用(3)
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2. 苏伟,孙自杰,岳鹏,林昊. 利用计算生物学方法识别原核启动子的研究进展. 电子科技大学学报. 2021(05): 667-675+657 . 本站查看
3. 谢亚茹,董志飞,杨佳赫,周小军,李前忠. 基于序列柔性参数的大肠杆菌启动子的预测. 内蒙古大学学报(自然科学版). 2018(06): 620-628 . 百度学术
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