title: Molecular analysis of rice ragged stunt oryzavirus segment 9 and sequence conservation among isolates from Thailand and India.
abstract: Nucleotide sequences of rice ragged stunt virus (RRSV) genome segment 9 (S9) from a Thai and an Indian isolate were determined. Both sequences are 1132 bp long, contain a single large open reading frame (ORF) spanning nucleotide residues 14 to 1027 and are capable of encoding a protein of 38.5K. The two isolates are 94.6% and 99.4% identical at the nucleotide and amino acid level, respectively. The authenticity of these coding sequences was confirmed by identifying a approximately 38K protein in the RRSV particle with an N-terminal amino acid sequence identical to that inferred from the S9 ORF. Furthermore, cDNA of S9 from each isolate incorporated into the bacterial expression vector pGEX3-X produced a fusion protein that reacted with antibodies raised against purified RRSV particles. Cleaving these fusion proteins with protease factor X liberated a approximately 38K polypeptide.
authors.affiliation: CSIRO Division of Plant Industry, Canberra, Australia.
authors.forename: N M
authors.initials: NM
authors.lastname: Upadhyaya
authors.forename: M
authors.initials: M
authors.lastname: Yang
authors.forename: W
authors.initials: W
authors.lastname: Kositratana
authors.forename: A
authors.initials: A
authors.lastname: Ghosh
authors.forename: P M
authors.initials: PM
authors.lastname: Waterhouse
mesh_terms: D000595:Amino Acid Sequence; D000956:Antigens, Viral / Q000235:genetics*; D001483:Base Sequence; D017931:DNA Primers / Q000737:chemistry; D018076:DNA, Complementary / Q000235:genetics; D005814:Genes, Viral; D007194:India; D008969:Molecular Sequence Data; D009690:Nucleic Acid Conformation; D012275:Oryza / Q000382:microbiology*; D012367:RNA, Viral / Q000235:genetics; D012087:Reoviridae / Q000235:genetics*; D013785:Thailand; D014764:Viral Proteins / Q000235:genetics* / Q000276:immunology; D015678:Viral Structural Proteins / Q000235:genetics; D014771:Virion / Q000276:immunology
chemical_list: D000956:Antigens, Viral; D017931:DNA Primers; D018076:DNA, Complementary; D012367:RNA, Viral; D014764:Viral Proteins; D015678:Viral Structural Proteins