TABLE 2.

Inhibition of glucosyltransferase activity by potassium and sodium salts

Salt addeda	% Inhibition of enzyme activityb
Potassium acetate	41.2 ± 3.1
Potassium chloride	56.6 ± 4.4
Potassium phosphate	70.2 ± 1.8
Potassium sulfate	47.7 ± 2.5
Sodium acetate	42.5 ± 2.2
Sodium chloride	59.6 ± 5.5
Sodium phosphate	69.3 ± 2.2
Sodium sulfate	44.8 ± 2.9

^aPotassium and sodium salts were added at a final concentration of 50 mM to an otherwise standard assay mixture. 

^bData are the averages from five experiments ± standard errors.