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盐生杜氏藻Ugd基因的cDNA克隆及序列分析
引用本文:李音,乔代蓉,易弋,贺庆华,李良,孙辉,曹毅.盐生杜氏藻Ugd基因的cDNA克隆及序列分析[J].四川大学学报(自然科学版),2004,41(2):409-412.
作者姓名:李音  乔代蓉  易弋  贺庆华  李良  孙辉  曹毅
作者单位:四川大学生命科学学院,成都,610064
基金项目:国家863项目(2002AA213021),国家自然科学基金(30270711)
摘    要:作者对不同物种Ugd基因的同源序列进行相似性分析后设计一对兼并引物,利用RTPCR技术获得一条200bp左右的片段,测序分析显示其同芋头(Colocasia esculenta)的Ugd基因的编码区有71.7%的相似性.然后再以此片段为模板设计引物,通过RACE技术获得盐生杜氏藻Ugd基因的全长序列.经克隆测序作blastx分析发现其同芋头(Colocasia esculenta)、大豆(Soybean)、水稻(Oryza sativa)、拟南芥(Arabidopsis thaliana)的Ugd基因有78%到81%的同源性.

关 键 词:同源克隆  兼并引物  Ugd  RACE
文章编号:0490-6756(2004)02-0409-04

Molecular cloning and sequence analysis of Ugd gene in Dunaliella.Salina
LI Yin,QIAO Dai-rong,YI Yi,HE Qing-hua,Li Liang,SUN Hui,CAO Yi.Molecular cloning and sequence analysis of Ugd gene in Dunaliella.Salina[J].Journal of Sichuan University (Natural Science Edition),2004,41(2):409-412.
Authors:LI Yin  QIAO Dai-rong  YI Yi  HE Qing-hua  Li Liang  SUN Hui  CAO Yi
Abstract:The degenerate primers were designed based on the homologous gene of Ugd in other organisms.A cDNA fragment of 200bp from D.salina was obtained by RT-PCR technique. After cloning and DNA sequencing, the result indicated that 71.7% of the sequence of the fragment was homologous to the Ugd in Colocasia esculenta.Based on this sequence, a pairs of primers weredesigned. By the RACE technique, the full-length cDNA of Ugd was successfully constructed in D.salina.
Keywords:homologous cloning  degenerate primer  Ugd(UDP-glucose dehydrogenase)  RACE(Rapid Amplification of cDNA End)  
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