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斜带石斑鱼生长催乳素基因全长cDNA的克隆、表达及其免疫荧光分析
Authors
周莉
李创举
+3 more
桂建芳
汪洋
贾海波
Publication date
1 January 2004
Publisher
Abstract
我们从斜带石斑鱼垂体的SMART cDNA质粒文库中筛选到生长催乳素基因(so-matolactin,SL)的全长cDNA片段,其编码区为1644bp,编码231个氨基酸,其中N-端的24个氨基酸肽段为信号肽。运用RT-PCR技术考察了其在石斑鱼不同组织中的mRNA的转录水平,结果表明,该基因在垂体中大量转录,在其他组织中几乎检测不到转录本的存在。选取基因开放阅读框的核苷酸序列插入pGEX-KG载体进行原核表达,在大肠杆菌中表达的融合蛋白的分子量约为50kDa,并以表达的产物为抗原免疫家兔制备了多克隆抗体。采用冰冻切片和FITC标记的荧光染色方法将SL基因初步定位于脑垂体中部,沿着神经组织边缘分布。本研究为深入研究石斑鱼的生长激素/催乳激素家族的进化关系及SL基因的功能奠定了基础
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Institute of Hydrobiology, Chinese Academy Of Sciences
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oai:ir.ihb.ac.cn:342005/39862
Last time updated on 23/01/2021