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红笛鲷(Lutjanussanguineus)C型凝集素基因的克隆与组织表达分析

DOI: 10.13560/j.cnki.biotech.bull.1985.2015.05.028, PP. 179-185

Keywords: 红笛鲷,C型凝集素,基因克隆,组织表达分析

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Abstract:

根据已知的海水鱼类C型凝集素基因的核苷酸保守区序列设计一对简并引物,先后通过RT-PCR和RACEPCR法从红笛鲷脾脏中首次克隆获得红笛鲷C型凝集素(CTL)基因的cDNA全长(登录号:AGT37609)。该序列长828bp,开放阅读框663bp,编码220个氨基酸。氨基酸序列分析显示,红笛鲷CTL基因氨基酸序列与其他物种CTL的相似性在30%-68%之间。系统进化分析表明,红笛鲷C型凝集素与鳉鱼、条石鲷、斜带石斑鱼CTL蛋白亲缘关系最近,聚成一支。通过荧光定量PCR分析红笛鲷基因的组织差异表达,红笛鲷CTL基因在肝、脾以及皮肤中表达水平较高,其次是头肾、肾、胃、肠及肌肉,在心脏与脑中表达量较低。

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