RESEARCH ARTICLE The Nucleocapsid Protein of Human Coronavirus NL63 Kaja Zuwała1, Anna Golda1, Wojciech Kabala1,2, Michał Burmistrz1, Michal Zdzalik1, Paulina Nowak1, Sylwia Kedracka-Krok2,3, Mirosław Zarebski4, Jerzy Dobrucki4, Dominik Florek1, Sławomir Zeglen5, Jacek Wojarski5, Jan Potempa1,6, Grzegorz Dubin1,2, Krzysztof Pyrc1,2* 1 Microbiology Department, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30–387, Krakow, Poland, 2 Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7, 30–387, Krakow, Poland, 3 Department of Physical Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30–387, Krakow, Poland, 4 Division of Cell Biophysics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland, 5 Department of Cardiac Surgery and Transplantology, Silesian Center for Heart Diseases, Szpitalna 2, 41–800, Zabrze, Poland, 6 Oral Health and Systemic Disease Research Group, School of Dentistry, University of Louisville, Louisville, KY, United States of America *