Forss S, Schaller H
Nucleic Acids Res. 1982 Oct 25;10(20):6441-50. doi: 10.1093/nar/10.20.6441.
Three closely related genes for the small genome-linked protein (VPg) of picornaviruses have been identified by sequence analysis as a tandem repeat in the genome of Foot and Mouth Disease Virus (FMDV), strain O1K. This unusual structure was also found in the genome of strain C1O, belonging to a different FMDV serotype. Predicted biochemical properties of the three VPg gene products are in excellent agreement with the data from protein analysis of a heterogeneous VPg population from a third FMDV serotype, strain A10 (1). Taken together, these data indicate that the VPgs from all three genes function equally well in vivo. This is the first report of a tandem repeat gene in a viral genome.
通过序列分析,已在口蹄疫病毒(FMDV)O1K株的基因组中鉴定出三个与小基因组连接蛋白(VPg)密切相关的基因,它们呈串联重复排列。在属于不同FMDV血清型的C1O株基因组中也发现了这种不同寻常的结构。三种VPg基因产物的预测生化特性与来自第三种FMDV血清型A10株的异质VPg群体的蛋白质分析数据高度吻合。综合这些数据表明,来自所有三个基因的VPg在体内功能同样良好。这是病毒基因组中串联重复基因的首次报道。