PMID: 7513932Feb 1, 1994Paper

Tick-borne flavivirus NS1 gene: identification of conserved peptides and antigenic analysis of recombinant louping ill virus NS1 protein

Virus Research
K VenugopalE A Gould

Abstract

The nucleotide sequence of the NS1 gene of louping ill (LI) virus has been determined. The sequence shows a high degree of homology with other members of the tick-borne serocomplex of flaviviruses and a lower homology with the mosquito-borne flaviviruses. Alignment of the deduced NS1 amino acid sequences with all tick-borne flavivirus NS1 sequences, identified four peptide regions which were conserved for all tick-borne flaviviruses, but were variable amongst mosquito-borne flaviviruses. A dendrogram, derived from the alignment of the NS1 protein sequences, indicated an evolutionary relationship that quite closely reflects the recognised serological classification. The LI virus NS1 protein expressed in Escherichia coli and baculoviruses showed similar antigenic reactivity to the authentic virus-coded protein when tested with NS1-specific monoclonal antibodies, but did not form high molecular weight complexes and was not secreted from cells.

References

Dec 1, 1977·Proceedings of the National Academy of Sciences of the United States of America·F SangerA R Coulson
Jun 1, 1975·The Journal of General Virology·E G Westaway
Jan 1, 1990·Annual Review of Microbiology·T J ChambersC M Rice
Apr 27, 1989·Nature·W R Brown
Sep 19, 2001·The Journal of Experimental Medicine·D HawigerM C Nussenzweig

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