中国寄生虫学与寄生虫病杂志 ›› 2010, Vol. 28 ›› Issue (1): 17-74.

• 研究简报 • 上一篇    下一篇

间日疟原虫海南分离株乳酸脱氢酶基因的克隆与序列分析

吕刚*,李静晶,赵世勇,芦亚君,范志刚   

  1. 海南医学院寄生虫学教研室, 海口 571101
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-02-28 发布日期:2010-02-28

Molecular Cloning and Sequence Analysis of Lactate DehydrogenaseGene from Plasmodium vivax Hainan Isolate

LV Gang*,LI Jing-Jing,ZHAO Shi-Yong,LU Ya-Jun,FAN Zhi-Gang   

  1. Department of Parasitology,Hainan Medical College,Haikou 571101,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-02-28 Published:2010-02-28

摘要: 用PCR扩增间日疟原虫海南分离株基因组DNA中乳酸脱氢酶(LDH)全长基因,命名为PvLDH/HN(GenBank登录号为FJ527750)。生物信息学分析表明, PvLDH/HN全长951 bp,编码316个氨基酸残基,与间日疟原虫Salvador I株、Belem株LDH等分离株核苷酸序列同源性均为99.89%(950/951),氨基酸序列同源性均为100%(316/316)。拓扑结构分析显示,该蛋白具有2个α螺旋跨膜区域,可能是膜蛋白。三级结构模型显示主要抗原表位82~95 aa位于蛋白表面,构成特异性底物结合环,提示该位点是可能的药物作用靶点及免疫诊断抗原表位。

关键词: 间日疟原虫, 乳酸脱氢酶, 克隆, 序列分析

Abstract: Full length sequence of lactate dehydrogenase gene was amplified by PCR from the genomic DNA of Plasmodium vivax Hainan isolate, and named as PvLDH/HN (GenBank No. FJ527750). Sequence analysis showed that the gene had 951 bp, coding 316 aa. Compared with PvLDH/Salvador and PvLDH/Belem, the nucleotide sequence homology of PvLDH/HN was both 99.89%, while the homology of amino acid sequence was 100%. Topology analysis showed that the protein had two transmembrane α-helices, which suggested that the protein might be a membrane protein. The major antigen epitope regions (82-95aa) was presented on the protein surface, and formed the specific substrate binding loop, which revealed that it might be an ideal target site for drug action and immunodiagnosis.

Key words: Plasmodium vivax, Lactate dehydrogenase, Clone, Sequence analysis