Published in:
Open Access 01-12-2014 | Research
Muscovy duck reovirus p10.8 protein localizes to the nucleus via a nonconventional nuclear localization signal
Published in: Virology Journal | Issue 1/2014
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Background
It was previously report that the first open reading frame of Muscovy duck reocvirus S4 gene encodes a 95-amino-acid protein, designed p10.8, which has no sequence similarity to other known proteins. Its amino acid sequence offers no clues about its function.
Results
Subcellular localization and nuclear import signal of p10.8 were characterized. We found that p10.8 protein localizes to the nucleus of infected and transfected cells, suggesting that p10.8 nuclear localization is not facilitated by viral infection or any other viral protein. A functional non-canonical nuclear localization signal (NLS) for p10.8 was identified and mapped to N-terminus residues 1–40. The NLS has the ability to retarget a large cytoplasmic protein to the nucleus.
Conclusions
p10.8 imported into the nucleus might via a nonconventional signal nuclear signal.