Abstract
The small RNA segment of some hantaviruses (family Bunyaviridae) encodes two proteins: the nucleocapsid protein and, in an overlapping reading frame, a non-structural (NSs) protein. The hantavirus NSs protein, like those of orthobunya- and phleboviruses, counteracts host innate immunity. Here, for the first time, the NSs protein of a hantavirus (Tula virus) has been observed in infected cells and shown to localize in the perinuclear area. Transiently expressed NSs protein showed similar localization, although the kinetics was slightly different, suggesting that to reach its proper location in the infected cell, the NSs protein does not have to cooperate with other viral proteins.
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Acknowledgments
The authors are grateful to Ilkka Julkunen for providing the FLAG-expressing plasmid. Tuomas Rönnberg is thanked for assistance in transfection experiments. This work was supported by the University of Helsinki (the Young Scientist’s grant for KMJ), The Academy of Finland and Sigrid Juselius Foundation, Helsinki.
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J. O. Virtanen and K. M. Jääskeläinen contributed equally to this paper.
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Virtanen, J.O., Jääskeläinen, K.M., Djupsjöbacka, J. et al. Tula hantavirus NSs protein accumulates in the perinuclear area in infected and transfected cells. Arch Virol 155, 117–121 (2010). https://doi.org/10.1007/s00705-009-0546-y
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DOI: https://doi.org/10.1007/s00705-009-0546-y