CLUSTALW protein sequence alignment of the Nudix motif consensus sequence with the Nudix-like domain of H. pylori HP0507 and its homologues in Homo sapiens (human), Mus musculus (mouse), Campylobacter jejuni, and Drosophila melanogaster (fruit fly). Identical residues are shaded. X, any residue; U, residues usually leucine (L), valine (V), or isoleucine (I); *, residues in consensus sequence with matches in HP0507.