The nonstructural protein 10（nsp10） of porcine reproductive and respiratory syndrome virus（PRRSV） encodes for helicase which plays a vital role in viral replication. In the present study, a truncated form of nsp10...The nonstructural protein 10（nsp10） of porcine reproductive and respiratory syndrome virus（PRRSV） encodes for helicase which plays a vital role in viral replication. In the present study, a truncated form of nsp10, termed nsp10 a, was found in PRRSV-infected cells and the production of nsp10 a was strain-specific. Mass spectrometric analysis and deletion mutagenesis indicated that nsp10 a may be short of about 70 amino acids in the N terminus of nsp10. Further studies by rescuing recombinant viruses showed that the Glu-69 in nsp10 was the key amino acid for nsp10 a production. Finally, we demonstrated that nsp10 a exerted little influence on the growth kinetics of PRRSV in vitro.展开更多
基金supported by the National Key Technology R&D Program of China (2015BAD12B01-2)the Major Program of National Natural Science Foundation of China (31490603)the earmarked fund for Modern Agroindustry Technology Research System of China (CARS-36)
文摘The nonstructural protein 10（nsp10） of porcine reproductive and respiratory syndrome virus（PRRSV） encodes for helicase which plays a vital role in viral replication. In the present study, a truncated form of nsp10, termed nsp10 a, was found in PRRSV-infected cells and the production of nsp10 a was strain-specific. Mass spectrometric analysis and deletion mutagenesis indicated that nsp10 a may be short of about 70 amino acids in the N terminus of nsp10. Further studies by rescuing recombinant viruses showed that the Glu-69 in nsp10 was the key amino acid for nsp10 a production. Finally, we demonstrated that nsp10 a exerted little influence on the growth kinetics of PRRSV in vitro.
