Determination of 5′-leader sequences from radically disparate strains of porcine reproductive and respiratory syndrome virus reveals the presence of highly conserved sequence motifs

被引:42
作者
Oleksiewicz, MB [1 ]
Botner, A [1 ]
Nielsen, J [1 ]
Storgaard, T [1 ]
机构
[1] Minist Food Agr & Fisheries, Danish Vet Inst Virus Res, DK-4771 Kalvehave, Denmark
关键词
D O I
10.1007/s007050050560
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
We determined the untranslated 5'-leader sequence for three different isolates of porcine reproductive and respiratory syndrome virus (PRRSV): pathogenic European- and American-types, as well as an American-type vaccine strain. 5'-leader from European- and American-type PRRSV differed in length (220 and 190 nt, respectively), and exhibited only approximately 50% nucleotide homology. Nevertheless, highly conserved areas were identified in the leader of all 3 PRRSV isolates, which constitute candidate motifs for binding of protein(s) involved in viral replication. These comparative data provide a priori knowledge for mutational identification of virulence determinants in the 5' nontranslated part of the PRRSV genome.
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收藏
页码:981 / 987
页数:7
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