| SD序列矩阵表示与保守性 |
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| 引用本文： | 陈颖丽,李前忠.SD序列矩阵表示与保守性[J].内蒙古大学学报(自然科学版),1999,30(3):329-334. |
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| 作者姓名： | 陈颖丽 李前忠 |
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| 作者单位： | 内蒙古大学物理学系 |
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| 摘 要： | 提出用矩阵形式表示一组核酸序列的方法．以大肠杆菌ＳＤ序列（在起始密码子ＡＴＧ前－１～－２５位点的２５个碱基范围内）为例给出了表示各位点单碱基、相邻双碱基、相邻三碱基出现的矩阵形式，并计算了体现序列的保守性、关联性的Ｍ（ｌ）值，发现大肠杆菌ＳＤ序列保守性，相邻双碱基、三碱基关联性与基因表达水平成正相关关系
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| 关 键 词： | 矩阵表示 保守性 SD区域 基因表达水平 |
The Conservative Character and the Matrix Representation of Shine Dalgarno(SD) Region |
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| CHEN Ying li,LI Qian zhong.The Conservative Character and the Matrix Representation of Shine Dalgarno(SD) Region[J].Acta Scientiarum Naturalium Universitatis Neimongol,1999,30(3):329-334. |
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| Authors: | CHEN Ying li LI Qian zhong |
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| Abstract: | The method of the matrix representation for DNA sequences is provided.The matrixes that form the probabilities of the bases (single base,neighbor 2 base,3 base) in SD region (in region of -1 to -25 sites before ATG codon) for E.coli DNA sequences are given.The values of M(l) reflected conservative character and correlation character are calculated.We find that the conservative character of SD region of E.coli genes,the correlation characters of some elements (neighbor 2 base,3 base) are positive correlated to the genes expression level. |
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| Keywords: | Matrix representation conservative character SD region genes expression level |
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