Complete nucleotide sequence of the S10 genome segment of grass carp reovirus (GCRV)

Hemorrhagic disease, caused by the grass carp reovirus (GCRV), is one of th e major diseases of grass carp in China. Little is known about the structur e and function of the gene segments of this reovirus. The S10 genome segmen t of GCRV was cloned and the complete nucleotide sequence is reported here. The S10 is 909 nucleotides long and contains a large open reading frame (O RF) encoding a protein of 276 amino acids with a deduced molecular weight o f approximately 29.7 kDa. Comparisons of the deduced amino acid sequence of GCRV S10 with those of other reoviruses revealed no significant homologies . However, GCRV S10 shared a putative zinc-finger sequence and a similar di stribution of hydrophilic motifs with the outer capsid proteins encoded by Coho salmon aquareovirus (SCSV) S10, striped bass reovirus (SBRV) S10, and mammalian reovirus (MRV) S4. It was predicted that this segment gene encode s an outer capsid protein.