豬輪狀病毒GZAS2020株與來外NX株VP7蛋白的結構預測和抗原表位分析

2022-12-16 09:35:37 張婧旭,梁海英,曾智勇等 《中國(guó)動物檢疫》2022年第10期

爲了解豬輪狀病毒(PoRV)VP7蛋白的生物信息學(xu身刀é)信息,運用Expasy-ProParam、YinOYang-1.2弟熱、TMHMM-2.0、ABCpred和IEDB等軟件,預測分析PoRV臨床體離分離株GZAS2020和疫苗株NX VP7蛋白的基本理化性質、結構功能(n頻歌éng)和B細胞抗原表位差異。結果顯示:兩(liǎng)種(zhǒng鐵鄉)VP7蛋白均屬于穩定蛋白、親水性蛋民窗白、跨膜蛋白和非分泌性蛋白;分離株與疫苗株的O糖基化位點數分别爲5放照5和62,N糖基化位點數均爲1,磷酸化位點數分别麗到爲29和30;亞細胞定位均位于質膜,均以α-螺旋來煙和無規則卷曲爲主要結構,延伸和β-轉角貫穿其中;藍用GZAS2020株的B細胞抗原表位綠南位于67~72 aa(PYANSTT)、97~100 aa(KWTE)懂生、176~179 aa(QQTD)、276~283 a慢農a(TTAPQTER),NX株位于96~99 aa(TKWK)、176~1亮離82 aa(QQTDEAN)、274~279 aa(DPT有雪TTP)、310~317 aa(MSKRSRSL),兩姐街(liǎng)者在97~100、176~1年窗79、276~279 aa處存在相同的B細胞抗原表位,但師秒GZAS2020株在無規則卷曲位置(67~72 aa)存在獨特的B細信飛胞抗原表位。以上結果說(shu器外ō)明,疫苗株NX與貴州省流行株GZAS2路黃020在主要抗原蛋白上存在差異。

Comparison of Sequencing Results b道討etween PRRSV OR錢對F5 Amplification Products and 報你Its Cloning

In order to learn the南工 bioinformatics informatio黑大n of VP7 protein of porcine rotavirus(木有PoRV),the differen些路ces of general phys北制icochemical properties,structur輛秒al functions and 些劇B-cell epitopes低一 of the clinical isola外些te GZAS2020 and the vaccine st習區rain NX VP7 protein were predicted a場月nd analyzed by using Expasy為通-ProParam,YinOYang-1.2,T市外MHMM-2.0,ABCpred,IEDB and ot睡還her software. The results 麗土showed that both the 化水VP7 proteins belonged to stable protein海通s,hydrophilic pro低通teins,transmembrane 舞可proteins and non-secretory prot要農eins;the number of O-glycosylati算土on sites in GZAS2020 and NX were跳務 55 and 62,respectively,th家化at of N-glycosylation site was 1,聽小and that of phosphory裡電lation sites was 29 and 30,respectiv裡算ely;all subcellular localization was這輛 located in the plasma membrane,with件能 main structure of河在 α-helix and irregular coil,through玩子 which the extension and β-turn海鄉 run;the B-cell epitopes of the GZA分自S2020 strain were located 國外at 67-72 aa(PYAN歌制STT),97-100 aa(KWTE),176-179 a現能a(QQTD)and 276-2電她83 aa(TTAPQTER),while tho市見se of NX were at 96-99個員 aa(TKWK),176-182 aa(QQTDEAN),274-279懂近 aa(DPTTTP)and 310-317 aa(MSKRSRSL)嗎林,both of which wer匠日e with same B-cell epitopes at 9遠慢7-100,176-179 and 276-279 aa,but unique請光 B-cell epitopes were observed in th山費e former at the放外 position with irregular coi我朋l. It was concl長弟uded that the major antigen protei山大ns of NX was different 師兵from those of GZA答廠S2020 prevalent in Guizh間下ou Province.

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