Gain, Preservation, and Loss of a Group 1a Coronavirus Accessory Glycoprotein

被引:76
作者
Lorusso, Alessio [1 ,2 ]
Decaro, Nicola [2 ]
Schellen, Pepijn [1 ]
Rottier, Peter J. M. [1 ]
Buonavoglia, Canio [2 ]
Haijema, Bert-Jan [1 ]
de Groot, Raoul J. [1 ]
机构
[1] Univ Utrecht, Fac Vet Med, Dept Infect Dis & Immunol, Div Virol, NL-3584 CL Utrecht, Netherlands
[2] Fac Vet Med, Dept Publ Hlth & Zootechn, Bari, Italy
关键词
D O I
10.1128/JVI.01031-08
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Coronaviruses are positive-strand RNA viruses of extraordinary genetic complexity and diversity. In addition to a common set of genes for replicase and structural proteins, each coronavirus may carry multiple group-specific genes apparently acquired through relatively recent heterologous recombination events. Here we describe an accessory gene, ORF3, unique to canine coronavirus type I (CCoV-I) and characterize its product, glycoprotein gp3. Whereas ORF3 is conserved in CCoV-I, only remnants remain in CCoV-II and CCoV-II-derived porcine and feline coronaviruses. Our findings provide insight into the evolutionary history of coronavirus group 1a and into the dynamics of gain and loss of accessory genes.
引用
收藏
页码:10312 / 10317
页数:6
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