Crystallization and X-ray data collection of HP0902 from Helicobacter pylori 26695.

HP0902 from Helicobacter pylori 26695 belongs to the cupin superfamily of proteins, which encompasses proteins with a great diversity in function. In this work, two types of recombinant HP0902 protein were crystallized: one with an N-terminal His(6) tag ((H6)HP0902) and the other with a C-terminal His(6) tag (HP0902(H6)). The (H6)HP0902 crystal diffracted to 1.40 Å resolution and belonged to space group P2(1), with unit-cell parameters a = 33.5, b = 78.6, c = 41.4 Å. The HP0902(H6) crystal belonged to space group P4(3)2(1)2 or P4(1)2(1)2 and diffracted to 2.5 Å resolution, with unit-cell parameters a = b = 50.4, c = 142.0 Å.