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SARS-CoV N蛋白研究进展
SARS-CoV(severe acute respiratory syndrome coronavirus)N蛋白是病毒的重要结构蛋白,也是目前倍受关注的蛋白组分.N蛋白位于病毒颗粒的核心,以与基因组RNA结合的形式存在,具有多种重要的生物学功能.本文就近期对SARSCoV N蛋白的研究进展作一综述.
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广西狂犬病毒野毒株的基因和抗原分析(英文)
Analyse the genetic and antigenic variant of rabies virus in Guangxi with epidemiological method, monoclonal antibodies reaction pattern and molecular biological technique. Rabies incidence has increase in recent three years in Guangxi, especially in mountainous areas. Investigation into the human rabies found that there are about 20% vaccinated defeat cases.On the basis of their reactivity to monoclonal antibodies against the viral nucleocapsid protein(mAb-N),4 street strains isolated from different areas where enzootic rabies is shown had different reaction patterns compared with Chinese vaccine strain(3aG). The nucleotide and amino acid sequence of street strain(GX89_1) G and N gene were compared with 3aG, the overall nucleotide homology of GX89_1 with 3aG was 84.5% and amino acid homology of GX89_1 with 3aG was 89.5% in G gene.The overall nucleotide homology of GX89_1 with 3aG was 86% in N gene and they were not in the same group.There are several amino acid replacement in AA 243_268 of G protein that can affect the antigenicity of rabies virus.The findings suggest that there are different street strains of rabies virus in Guangxi.
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