摘要
目的:探讨乙肝表面抗原-CD40L胞外段融合蛋白设计的合理性。方法:应用Gene Constructionkit2.5、DNAStar软件和www.expasy.org网站提供的分析方案分析重组体的开放读框以及融合蛋白的柔性、亲水性、抗原性、表位等性质,并作了二级结构模拟分析。结果:重组体CMV启动子下游有完整的目的基因ORF,融合蛋白二级结构水平未出现新的抗原性及表位,亲水性无改变,Linker部位抗原性低,呈中性且柔性高,不影响两端的蛋白质二级结构及融合蛋白空间构象。结论:重组体设计合理,融合蛋白很大可能保留了乙肝表面抗原和CD40L胞外段的生物学活性,为进一步研究提供了理论依据。
Objective: To explore the reasonability of the design of HBsAg-ecdCD40L fusionprotein. Methods: Using sequence analysis software and protocols prescribed on website www.expasy.com the open reading frame of the recombinant plasmid and the flexibility,hydrophilicity,antigenicity and epitope of recombinant HBsAg-ecdCD40L were analyzedand the secondary structure of HBsAg-ecdCD40L fusion protein was analyzed, too. Resuits: The fusion protein had correct domains of ttBsAg and ecdCD40L. The linker had low antigencity and high flexibility and might not influence the secondary structure of the fusion protein. Conclusion: The design of the fusion protein is reasonable. It Keeps the maximum biological activities of HBsAg and ecdCD40L.
出处
《温州医学院学报》
CAS
2009年第3期205-208,共4页
Journal of Wenzhou Medical College
基金
浙江省自然科学基金资助项目(Y205445)