Oligomerization of the carboxyl terminal domain of the human coronavirus 229E nucleocapsid protein

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Abstract

The coronavirus (CoV) N protein oligomerizes via its carboxyl terminus. However, the oligomerization mechanism of the C-terminal domains (CTD) of CoV N proteins remains unclear. Based on the protein disorder prediction system, a comprehensive series of HCoV-229E N protein mutants with truncated CTD was generated and systematically investigated by biophysical and biochemical analyses to clarify the role of the C-terminal tail of the HCoV-229E N protein in oligomerization. These results indicate that the last C-terminal tail plays an important role in dimer-dimer association. The C-terminal tail peptide is able to interfere with the oligomerization of the CTD of HCoV-229E N protein and performs the inhibitory effect on viral titre of HCoV-229E. This study may assist the development of anti-viral drugs against HCoV. Structured summary of protein interactions: N and C-terminal tail peptide bind by cosedimentation in solution (View interaction) N and N bind by cosedimentation in solution (View Interaction: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12) C-terminal tail peptide and N bind by fluorescence technology (View interaction) N and N bind by cross-linking study (View interaction) N and N bind by cross-linking study (View Interaction: 1, 2, 3, 4) © 2012 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.

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Lo, Y. S., Lin, S. Y., Wang, S. M., Wang, C. T., Chiu, Y. L., Huang, T. H., & Hou, M. H. (2013). Oligomerization of the carboxyl terminal domain of the human coronavirus 229E nucleocapsid protein. FEBS Letters, 587(2), 120–127. https://doi.org/10.1016/j.febslet.2012.11.016

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