Many knotted proteins have been discovered recently, but the folding process of which remains elusive. HP0242 is a hypothetical protein from Helicobacter pylori, which is a model system for studying the folding pathway of a knotted protein. In this study, we report the (1)H, (13)C, and (15)N chemical shift assignments of HP0242. The results will enable us to further investigate HP0242 by NMR experiments.