Identification and characterization of RNA-binding activities of avian reovirus non-structural protein sigmaNS

The Journal of General Virology
H S Yin, L H Lee

Abstract

Cytoplasmic extracts prepared from avian reovirus (ARV) strain S1133-infected chicken embryo fibroblasts were examined for the presence of RNA-binding proteins in order to identify and characterize ARV RNA-binding proteins. Analysis of binding activity to poly(A)-Sepharose indicated that infected cells contained significant amounts of a protein that co-migrated with ARV protein sigmaNS present in total virus-infected cell extracts. Determination of the N-terminal amino acid sequence of several peptide fragments generated by V8 protease digestion of the poly(A)-Sepharose-purified protein confirmed that this viral protein was sigmaNS. Competition assays showed that single-stranded RNA from the unrelated avian pathogen infectious bursal disease virus was able to compete for binding of sigmaNS to poly(A)-Sepharose. These data suggest that ARV sigmaNS binds to single-stranded RNA in a nucleotide sequence non-specific manner and is functionally similar to its counterpart specified by mammalian reovirus.

Citations

Apr 19, 2002·The Journal of General Virology·Gaëlle Kuntz-SimonVéronique Jestin
Mar 29, 2014·Avian Pathology : Journal of the W.V.P.A·Naresh JindalSagar M Goyal
Oct 5, 2006·Virus Research·Javier Benavente, Jose Martínez-Costas
Mar 24, 2005·The Journal of General Virology·Fernando Tourís-OteroJavier Benavente
May 8, 2018·Oncotarget·Manas R PraharajDeepak Kumar

❮ Previous
Next ❯

Related Concepts