1.400038 重庆,陆军军医大学(第三军医大学)军事预防医学系热带医学教研室
2.510220 广州,中国人民解放军陆军第七十四集团军医院重症医学科
Received:29 December 2020,
Revised:2021-02-02,
Published:30 June 2021
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Shasha YU, Hui HU, Jie QIN, et al. Amplification of full-length cDNA sequence of
Shasha YU, Hui HU, Jie QIN, et al. Amplification of full-length cDNA sequence of
目的
2
对大劣按蚊卵黄蛋白原(
Anopheles dirus
vitellogenin
AdVg)基因cDNA的全长序列进行扩增和分析,并对其功能域蛋白进行表达与纯化。
方法
2
基于前期克隆的AdVg基因cDNA片段,利用RACE PCR技术,扩增AdVg基因的5'末端及3'末端序列。用Vector NTI软件将测序得到的AdVg cDNA片段、5'末端序列、3'末端序列进行校正,拼接得到完整的AdVg cDNA全长序列。对AdVg全长序列进行功能域预测。利用pet28a(+)构建重组质粒进行AdVg功能域蛋白的表达与纯化。
结果
2
成功获得AdVg基因全长cDNA序列,包括117 bp的5' UTR序列、192 bp的3' UTR序列和6 186 bp的ORF序列。AdVg蛋白主要包含Vit N、DUF1943及vWD 3个结构域。通过构建重组质粒,成功表达和纯化了AdVg Vit N功能域蛋白。
结论
2
成功克隆了大劣按蚊卵黄蛋白原基因的全长序列,并获得了重组蛋白。
Objective
2
To amplify and analyze the full-length cDNA of
Anopheles dirus
vitellogenin (AdVg) gene
and express and purify its functional domain.
Methods
2
Based on the cDNA fragments of AdVg gene cloned earlier
the full-length sequence was obtained through rapid amplification of cDNA ends (RACE). The sequences of AdVg cDNA fragment
5' end and 3' end were corrected and assembled to obtain a complete AdVg cDNA full-length sequence by Vector NTI software. Then the full-length sequence of AdVg was used to predict the functional domain. Finally
recombinant plasmid pet28A (+) was used to express and purify the AdVg functional domain.
Results
2
The full-length cDNA sequence of the AdVg gene was successfully obtained
including a 117 bp 5' UTR sequence
a 192 bp 3'UTR sequence
and a 6 186 bp open reading frame (ORF) sequence. Meanwhile
the analysis showed that the AdVg protein mainly contained 3 structural domains
including Vit N
DUF1943 and vWD. Then we successfully expressed and purified the functional domain AdVg Vit N by constructing a recombinant plasmid.
Conclusion
2
The full-length cDNA of AdVg is successfully cloned
and the recombinant protein of its functional domain Vit N is obtained in this study.
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