crystallization communications Acta Cryst. (2010). F66, 815–818 doi:10.1107/S1744309110017616 815 Acta Crystallographica Section F Structural Biology and Crystallization Communications ISSN 1744-3091 Crystallization and preliminary X-ray diffraction analysis of the N-terminal domain of human coronavirus OC43 nucleocapsid protein I-Jung Chen,a‡ Chia-Cheng Chou,b‡ Chia-Ling Liu,a Cheng-Chung Lee,c Lou-Sing Kand,e and Ming-Hon Houa,f* aDepartment of Life Sciences, National Chung Hsing University, Taichung 402, Taiwan, bNational Synchrotron Radiation Research Center, Hsinchu 300, Taiwan, cInstitute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan, dInstitute of Bioengineering, Tatung University, Taipei 104, Taiwan, eInstitute of Chemistry, Academia Sinica, Taipei 11529, Taiwan, and fInstitute of Genomics and Bioinformatics, National Chung Hsing University, Taichung 402, Taiwan ‡ These authors contributed equally to this paper. Correspondence e-mail: