4.6.1.18 4 - uridine 5'-phosphate binds to the active site of the enzyme by anchoring two molecules connected to each other by hydrogen bonds and van der Waals interactions 706977 4.6.1.18 5.5 - phosphate F120G mutant, pH 5.5, 25°C 655907 4.6.1.18 6.4 - phosphate wild type enzyme, pH 5.5, 25°C 655907 4.6.1.18 10 - phosphate F120A mutant, pH 5.5, 25°C 655907 4.6.1.18 10 - phosphate F120L mutant, pH 5.5, 25°C 655907 4.6.1.18 11 - phosphate F120W mutant, pH 5.5, 25°C 655907