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中华鲟阿黑皮素原cDNA序列克隆及其序列分析
Authors
危起伟
曹宏
李创举
桂建芳
Publication date
1 January 2011
Publisher
Abstract
通过构建中华鲟(Acipenser sinensis)垂体的SMART cDNA质粒文库,首次从文库中筛选得到阿黑皮素原(Proopiomelanocortin,POMC)cDNA全长序列,分别为阿黑皮素原A型基因(Proopiomelanocortin I,AsPOMC-A,EV824935)和阿黑皮素原B型基因(Proopiomelanocortin II,AsPOMC-B,EV825368)。其中,AsPOMC-A和AsPOMC-B分别在文库中出现128次和19次。AsPOMC-A全长1122 bp,有792 bp的开放阅读框,共编码264个氨基酸。AsPOMC-B全长1216 bp,有792 bp的开放阅读框,共编码264个氨基酸。以其氨基酸序列为分子标记,比较了3种鲟鱼的共6种POMC的氨基酸同源性,并利用已报道的鱼类的POMC氨基酸序列构建了系统发育树,可识别2个大的单系类群,即类群I:非新鳍亚纲类群(仅包含辐鳍亚纲的长吻雀鳝),类群II:新鳍亚纲类群。AsPOMC可能是一种进化上更原始的基因
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Institute of Hydrobiology, Chinese Academy Of Sciences
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Last time updated on 31/01/2020