Statistical characteristics of eukaryotic intron database  

作　　者：HE Miao LI Jidong ZHANG Shanghong 

机构地区：[1]School of Life Sciences,Sun Yat-Sen University,Guangzhou 510275,China [2]The Key Laboratory of Gene Engineering of Ministry of Education,and Biotechnology Research Center,Sun Yat-Sen University,Guangzhou 510275,China

出　　处：《Frontiers in Biology》2006年第4期362-366,共5页生物学前沿（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(No.30270752);the Guang-dong Natural Science Foundation(No.031616).

摘　　要：A database called eukaryotic intron database(EID)was developed based on the data from GenBank.Studies on the statistical characteristics of EID show that there were 103,848 genes,478,484 introns,and 582,332 exons,with an average of 4.61 introns and 5.61 exons per gene.Introns of 40−120 nt in length were abundant in the database.Results of the statistical analysis on the data from nine model species showed that in eukaryotes,higher species do not necessarily have more introns or exons in a gene than lower species.Furthermore,characteristics of EID,such as intron phase,distribution of different splice sites,and the relationship between genome size and intron proportion or intron density,have been studied.

关 键 词：EUKARYOTE INTRON DATABASE statistical characteristics 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]