Region of Nipah virus C protein responsible for shuttling between the cytoplasm and nucleus.

Abstract:

:Nipah virus (NiV) causes severe encephalitis in humans, with high mortality. NiV nonstructural C protein (NiV-C) is essential for its pathogenicity, but its functions are unclear. In this study, we focused on NiV-C trafficking in cells and found that it localizes predominantly in the cytoplasm but partly in the nucleus. An analysis of NiV-C mutants showed that amino acids 2, 21-24 and 110-139 of NiV-C are important for its localization in the cytoplasm. Inhibitor treatment indicates that the nuclear export determinant is not a classical CRM1-dependent nuclear export signal. We also determined that amino acids 60-75 and 72-75 were important for nuclear localization of NiV-C. Furthermore, NiV-C mutants that had lost their capacity for nuclear localization inhibited the interferon (IFN) response more strongly than complete NiV-C. These results indicate that the IFN-antagonist activity of NiV-C occurs in the cytoplasm.

journal_name

Virology

journal_title

Virology

authors

Horie R,Yoneda M,Uchida S,Sato H,Kai C

doi

10.1016/j.virol.2016.07.013

subject

Has Abstract

pub_date

2016-10-01 00:00:00

pages

294-304

eissn

0042-6822

issn

1096-0341

pii

S0042-6822(16)30180-5

journal_volume

497

pub_type

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