INFORMATION CONTENTS AND DINUCLEOTIDE COMPOSITIONS OF PLANT INTRON SEQUENCES VARY WITH EVOLUTIONARY ORIGIN

被引：40

作者：

WHITE, O ^{[1
]}

SODERLUND, C ^{[1
]}

SHANMUGAN, P ^{[1
]}

FIELDS, C ^{[1
]}

机构：

[1] NEW MEXICO STATE UNIV,COMP RES LAB,BOX 3001-3CRL,LAS CRUCES,NM 88003

来源：

PLANT MOLECULAR BIOLOGY | 1992年 / 19卷 / 06期

关键词：

COMPUTATION; DINUCLEOTIDE; INFORMATION; INTRON; SPLICE SITE;

D O I：

10.1007/BF00040537

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The DNA sequence composition of 526 dicot and 345 monocot intron sequences have been characterized using computational methods. Splice site information content and bulk intron and exon dinucleotide composition were determined. Positions 4 and 5 of 5' splice sites contain different statistically significant levels of information in the two groups. Basal levels of information in introns are higher in dicots than in monocots. Two dinucleotide groups, WW (AA, AU, UA, UU) and SS (CC, CG, GC, GG) have significantly different frequencies in exons and introns of the two plant groups. These results suggest that the mechanisms of splice-site recognition and binding may differ between dicot and monocot plants.

引用

页码：1057 / 1064

页数：8

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