Functional and structural characterization of Ebola virus glycoprotein （1976-2015） -- An in silico study  

作　　者：Behzad Dehghani Farzane Ghasabi Tayebeh Hashempoor Hassan Joulaei Zahra Hasanshahi Mehrdad Halaji Nazanin Chatrabnous Zahra Mousavi Javad Moayedi 

机构地区：[1]Shiraz HIV/AIDS Research CenterInstitute of Health, Shiraz University of Medical Sciences, Shiraz, Iran [2]Department of MicrobiologySchool of Medicine, Isfahan University of Medical Sciences, Isfahan, IR Iran

出　　处：《International Journal of Biomathematics》2017年第8期39-61,共23页生物数学学报（英文版）

摘　　要：Ebola virus （EBOV） is the causative agent of a severe hemorrhagic fever disease associ- ated with high mortality rates in humans. This virus has five strains of which Zaire Ebola virus （ZEBOV） is the first and most important strain. It can be transmitted through contact with contaminated surfaces and objects. The genome of EBOV codes one non- structural and seven structural proteins consisting of two forms of glycoprotein （GP）： soluble glycoprotein （sGP） and GP （spike）. In this paper, we attempted to characterize and predict physicochemical properties, B-cell epitopes, mutation sites, phosphorylation sites, glycosylation sites, and different protein structures of EBOV GP to provide com- prehensive data about changes of this GP during a 40-years course （1976-2015）. GP sequences were obtained from NCBI gene bank from 1976-2015. Expasy＇sProtParam, PROTSCALE, immuneepitope, Bepipred, BcePred, ABCpred, VaxiJen, DISPHOS, Net- Phos, and numerous programs were used to predict and analyze all sequences. More variety of mutations were found in 2015 sequences and mutations were related to huge changes in B-cell epitopes, phosphorylation and glycosylation sites. In addition, our results determined different sites of disulfide bonds and an important mutation related to IgE epitope as well as four potent B-cell epitopes （380-387, 318-338, 405-438 and 434-475）. In this study, we suggested the effect of mutations on GP properties, six posi- tions for disulfide bonds and four phosphorylation sites for protein kinase C enzyme. Selected sequences were shown different sites for O-link and N-link glycosyl^tion. A mutation that changed GP to an allergen protein and has a significant role in vaccine designing as well as four potent B-cell epitopes in GP protein were found.

关 键 词：EBOV GP protein BIOINFORMATICS epitopes mapping post-modification sits structural analysis. 

分 类 号：G0[文化科学]