Evolutionary analyses of five US bluetongue viruses using the cognate S2 genes

Yang Yi-Yuan, Chiou Jwo-Farn, Hwang Guang-Yuh, Huang I-Jen, Li Joseph K.-K.

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Full-length cDNA copies of S2 genes (segment 8), coding for non-structural protein 2 (NS2) of bluetongue virus serotypes 2, 11, 13 and 17 were selectively synthesized by a modified polymerase chain reaction (Clamp-R) and cloned into the PstI site of the pUC19 plasmid. Each of these S2 cognate genes was 1125 nucleotides in length with an initiation and a termination codon at nucleotides 20-22 and 1082-1084, respectively, resulting in a long open reading frame capable of coding for a protein of 354 amino acids. The deduced amino acid sequence of NS2 protein had a high concentration of lysine and contained a relatively low number of tryptophan and histidine residues. There was a highly conserved hydrophilic region at the carboxyl termini of predicted NS2 proteins in all five BTV serotypes, even though the amino acid sequence in this region in BTV-2 was more variable than in the other four serotypes. There was significant sequence homology of the cognate S2 genes at both the nucleotide and the amino acid levels. Phylogenetic analyses using the S2 gene sequences indicated that BTV-10, -11, -13 and -17 were more closely related and BTV-2 was the most distantly related serotype among the five US bluetongue viruses.

Original languageEnglish
Pages (from-to)241-249
Number of pages9
JournalVirus Research
Volume25
Issue number3
DOIs
Publication statusPublished - Sep 15 1992
Externally publishedYes

Fingerprint

Bluetongue virus
Genes
Proteins
Nucleotides
Amino Acid Sequence
Amino Acids
Terminator Codon
Sequence Homology
Histidine
Tryptophan
Open Reading Frames
Lysine
Plasmids
Complementary DNA
Polymerase Chain Reaction
Serogroup

Keywords

  • Bluetongue virus
  • Nucleotide sequence
  • Phylogenetic tree
  • S2 cognate gene

ASJC Scopus subject areas

  • Cancer Research
  • Molecular Biology
  • Virology

Cite this

Evolutionary analyses of five US bluetongue viruses using the cognate S2 genes. / Yi-Yuan, Yang; Jwo-Farn, Chiou; Guang-Yuh, Hwang; I-Jen, Huang; Joseph K.-K., Li.

In: Virus Research, Vol. 25, No. 3, 15.09.1992, p. 241-249.

Research output: Contribution to journalArticle

Yi-Yuan, Yang ; Jwo-Farn, Chiou ; Guang-Yuh, Hwang ; I-Jen, Huang ; Joseph K.-K., Li. / Evolutionary analyses of five US bluetongue viruses using the cognate S2 genes. In: Virus Research. 1992 ; Vol. 25, No. 3. pp. 241-249.
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