SD序列矩阵表示与保守性  

The Conservative Character and the Matrix Representation of Shine Dalgarno(SD) Region

作　　者：陈颖丽[1] 李前忠[1] 

机构地区：[1]内蒙古大学物理学系

出　　处：《内蒙古大学学报（自然科学版）》1999年第3期329-334,共6页Journal of Inner Mongolia University：Natural Science Edition

基　　金：国家自然科学基金

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。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.

关 键 词：矩阵表示 保守性 基因表达水平 DNA SD序列 

分 类 号：Q523[生物学—生物化学] Q753