α-Amylase Inhibitor from Triticum aestivum (wheat seed) Type I, lyophilized powder Sigma A1520

Packaging

1, 5, 25 mg in glass bottle

Unit Definition

One unit will reduce the activity of two units of α-amylase (A0521) by 50% after pre-incubation at 25 °C.

Physical form

Lyophilized powder containing buffer salts as sodium phosphate.

Biochem/physiol Actions

Competitive inhibitor of human salivary α-amylase. K_I = 2.9 nM, compared to a K_M of 5.9 mM (calculated per mole of α-1,4-linked maltose residues).