Abstract Helicobacter pylori produces ammonia to help counter the acidic environment in the human stomach. The production of ammonia, essential for the microorganism's survival and virulence, is the product of enzymatic conversion of urea by the H. pylori's urease. Inhibition of urease activity by dipeptide hydroxamic acids has previously been demonstrated using a variety of fluorides, thiols and hydroxamic acids. Studies employing computer-aided drug ...