Source: E.coli strain that carries the cloned Hae III gene fromHaemophilus aegyptius Supplied in 100 mM KCl, 10 mM Tris-HCl, pH 7.4, 0.1 mM EDTA, 10 mM 2-mercaptoethanol, 500 mg/ml BSA, 50% glycerol. Activity: 5,000 to 20,000 units/ml.Ref.: Kroger, M., Hobom, G., Schutte, H. and Mayer H., Recognition Sequence from: Nucleic Acids Res., 12: 3127-3141, (1984).