摘要
测定了蓖麻蚕核糖体大亚基ＲＮＡ编码区３’－端ＤＮＡ序列，分析了其二级结构，并与昆虫伊蚊、果蝇；线虫；脊椎动物人、小鼠、爪蟾；低等脊索动物海鞘以及真菌酵母、毛霉相应的保守区段进行了同源比较。邻接法分析表明，昆虫核糖体大亚基ＲＮＡ在进化上与５ＳｒＲＮＡ相似，有加快的趋势。
The DNA sequence of the 3' -end of LSu-rRNA coding region of silkworm .Attacus ricini was determined. By -comparisons with the corresponding sequence of H. sapiens, X.leavis,H momus, A. albopictus , D. melanogaster,C.elegants, S. pombe, M musculus and M racemosus, we found that the coding sequence we obtained is very conserved. Phylogenetic tree inferred by Neighbor-jioning Method showed that the rate of evolution of insects was much faster than vertebrate. In addition, the secondary structure has also worked out it is highly conserved.
关键词
蓖麻蚕
RRNA基因
序列分析
分子进化
Ribosomal gene of Attacus ricini, DNA sequence, 28S rRNA secondary structure,Molecular evolution
