Abstract
We report here the molecular characterization of a bovine genogroup I picobirnavirus strain RUBV-P detected from a 1-month-old diarrhoeic calf in eastern India. Sequence comparisons and phylogenetic analysis of a short stretch of gene segment 2 of RUBV-P revealed low nucleotide identities (51.2-64.9%) with and distant genetic relatedness to other genogroup I picobirnaviruses. The complete gene segment 2 sequence of RUBV-P was obtained by the single primer amplification method with modifications. Gene segment 2 of RUBV-P was 1758 bp long, encoded a predicted protein of 554 aa and exhibited low nucleotide (58.1-58.8%) and amino acid (51.3-55.4%) identities with genogroup I human strains Hy005102 and 1-CHN-97. The 5'- and 3'-end nucleotide sequences, and the three motifs of RNA-dependent RNA polymerases of double-stranded RNA viruses, were conserved among these strains. Our findings suggested that bovine strain RUBV-P might be distinct from genogroup I picobirnaviruses of humans and other animals.
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