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Sequence analysis of Pns11, a nonstructural protein of rice gall dwarf virus, and its expression and detection in infected rice plants and vector insects.

Moriyasu Y., Ishikawa K., Kikuchi A., Imanishi S., Tomita S., Akutsu K., Omura T.

The nucleotide sequence of genome segment S11 of rice gall dwarf virus (RGDV), a member of Phytoreovirus, was determined. The segment encodes a putative protein of 40 kDa that exhibits approximately 37% homology at the amino acid level to the nonstructural proteins Pns10 of rice dwarf and wound tumor viruses, which are other members of Phytoreovirus. A band of a protein with an apparent molecular mass of 40 kDa was specifically detected in an analysis of cells transfected with S11 cDNA. An antiserum raised against this protein reacted with a protein of approximately 40kDa after fractionation by SDS-PAGE of materials prepared from infected plants and from viruliferous vector insects. However, the antiserum did not react with purified viral proteins. These results suggest that S11 encodes a nonstructural protein of RGDV. This protein was named Pns11.

Virus Genes 20:237-241(2000) [PubMed] [Europe PMC]

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