protein structure communications Acta Cryst. (2008). F64, 459–462 doi:10.1107/S1744309108012396 459 Acta Crystallographica Section F Structural Biology and Crystallization Communications ISSN 1744-3091 Structure of a SARS coronavirus-derived peptide bound to the human major histocompatibility complex class I molecule HLA-B*1501 Gustav Røder,a* Ole Kristensen,b Jette S. Kastrup,b Søren Buusa and Michael Gajhedeb aInstitute of International Health, Immunology and Microbiology, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen, Denmark, and bDepartment of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark Correspondence e-mail: