NUCLEOTIDE-SEQUENCE AND GENOME ORGANIZATION OF THE MURINE POLYOMAVIRUS, KILHAM STRAIN

被引:27
作者
MAYER, M [1 ]
DORRIES, K [1 ]
机构
[1] UNIV WURZBURG,INST VIROL & IMMUNBIOL,VERSBACHERSTR 7,W-8700 WURZBURG,GERMANY
关键词
D O I
10.1016/0042-6822(91)90879-G
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The polyomavirus Kilham strain (KV) represents a second murine member of the polyomavirus family. However, in contrast to other polyomaviruses, KV exhibits a stringent host and cell specificity. To determine the relationship of these viruses, the complete DNA sequence of KV consisting of 4754 by was determined. The predicted organization of K virus was found to be comparable to that of other members of the polyomavirus family with two strands coding in an opposite direction of an intergenic region harboring putative control elements for gene expression. These include consensus elements for the origin of DNA replication as well as predicted promoter protein binding domains. Inferred signal sequences for 3′ and 5′ end formation of mRNAs and splice/branch site consensus sequences resemble those found among the SV40 group of viruses. From the organization of the genome two nonstructural proteins, large T and small t antigen, are predicted, both of which share the same amino-terminal sequence. Three putative capsid proteins VP1, VP2, and VP3 are encoded by alternative open reading frames. The nucleotide sequence in the proposed origin of DNA replication and the inferred amino acid sequence of the viral proteins suggest an evolutionary relationship placing KV between the murine PyV and the SV40 group of viruses. In the region bearing putative transcriptional control elements less nucleotide similarity to that of other polyomaviruses is found and this may reflect the unique host and cell specificity of KV. © 1991.
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页码:469 / 480
页数:12
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