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Cloning and Sequencing Full-length cDNA Encoding PG Gene from Persimmon
Author(s): 
Pages: 656-661
Year: Issue:  4
Journal: Acta Botanica Boreali-Occidentalia Sinica

Keyword:  PG酶cDNA克隆;
Abstract: 以'富平尖柿'(Diospyros kaki L.cv.Fuping Jianshi)为材料,采用RACE方法,首次获得了柿果实多聚半乳糖醛酶(PG)基因的3个全长cDNA(登录号为EU816197、EU816198、EU816199),分别命名为DKPG1、DKPG2、DKPG3.DKPG1全长1 616 bp,DKPG2全长1 654 bp,DKPG3全长1 545 bp.3个基因均含有一个1 326 bp的开放阅读框,共编码441个氨基酸.通过Blast比对发现该基因核苷酸序列与其他植物已报道的PG基因具有74%~78%的相似性;其氨基酸序列与其他植物的相似性为60%~73%.对GenBank同源性搜索获得的其他植物PG基因氨基酸序列进行系统进化分析,发现其与葡萄、猕猴桃、桃的亲缘关系近,与大豆亲缘关系较远.
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