红笛鲷α-珠蛋白和β-珠蛋白基因的克隆及序列分析Molecular Cloning and Sequence Analysis of α- and β-Globin Gene of Hunphead Snapper (Lutjanus sanguineus)
张新中,鲁义善,吴灶和,简纪常
摘要(Abstract):
应用已知的标签序列通过RACE-PCR和RT-PCR方法成功克隆红笛鲷(Lutjanus sanguineus)α-珠蛋白和β-珠蛋白基因的全长cDNA序列。α-珠蛋白和β-珠蛋白基因的cDNA全长分别为560和563 bp,开放阅读框分别为429和444 bp,各编码143和148个氨基酸,理论相对分子质量分别为15690和16400,理论等电点为7.79和6.61。氨基酸序列BLAST结果表明,红笛鲷α-珠蛋白基因和β-珠蛋白基因编码的氨基酸序列与其他鱼类的相似性分别在59%~79%和55%~80%之间。用邻接法(Neighbor-Joining)构建的α-珠蛋白基因和β-珠蛋白基因的系统发育树表明,红笛鲷与真鲷(Pagrus major)、金头鲷(Sparus aurata)和鰤(Seriola quinqueradiata)等亲缘关系较近。
关键词(KeyWords): 红笛鲷;α-珠蛋白;β-珠蛋白;基因克隆;基因序列
基金项目(Foundation): 国家自然科学基金项目(40906073);; 广东省科技厅国际合作项目(2009B050700040)
作者(Author): 张新中,鲁义善,吴灶和,简纪常
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