昆虫防御素基因(defensin)的起源与分子进化  

Molecular Evolution and Origin of Insect Defensin Gene

作　　者：李培[1] 王波[1] 朱杰[2] 黄原[1] 

机构地区：[1]陕西师范大学生命科学学院,西安710062 [2]西北农林科技大学生命科学学院,杨凌712100

出　　处：《现代生物医学进展》2006年第4期66-69,共4页Progress in Modern Biomedicine

摘　　要：果蝇防御素基因位于它的第二条染色体右臂上,其编码产物具有抗菌肽活性,主要对革兰氏阳性菌有抗性。由于其有牢固的分子骨架、广泛的分布以及生物活性,对它的研究已成为当前国际研究热点。本文主要使用NCBI的资源分析黑腹果蝇防御素及其同源序列,并讨论了昆虫防御素的起源和分子进化。Defensin, abbreviated as def., is a kind of special nuclear gene of insects. Defensin, existing in the fight ann of the second chromosome of drosophila melanogaster, encodes a product which possesses an anti - bacterial peptide activity and resists Gram - positive bacteria. Because of finn molecular skeleton, extensive distribution and biological activity, at present, defensin is being studied widely. In this paper, 20 species of insects have been analyzed based on def. using ClustalX 1.8 and Mega2.1 software.

关 键 词：昆虫防御素 同源蛋白质 基因树 物种树 

分 类 号：Q966[生物学—昆虫学] S792.117[农业科学—林木遗传育种]