3.4.15.1 cetyltrimethylammonium bromide 0.1 and 1 mM 732845 3.4.15.1 cetyltrimethylammonium bromide CTAB, activates at 0.1-1.0 mM 755273 3.4.15.1 Cl- - 81241, 81260, 81287 3.4.15.1 Cl- activates 650267, 81212, 81214, 81250, 81264, 81270, 81284 3.4.15.1 Cl- activation, optimal NaCl concentration for the brain enzyme in hydrolysis of LVVYPWTQRY is 10 mM, optimal concentration for hydrolysis of angiotensin I is 200 mM 653416 3.4.15.1 Cl- assay in the presence of zinc and chloride 764572 3.4.15.1 Cl- kcat increases with increasing KCl concentrations, reaches a maximum at about 300 mM KCl, and the begins to decrease. At relatively low concentrations chloride anions activate the C-domain of the enzyme, but at high concentrations chloride inhibits the enzyme activity. Presence of at least two chloride-binding sites in the C-domain of bovine enzyme: binding of chloride to one of the sites causes activation of the enzyme, whereas chloride binding to the second site results in inhibition of the enzymatic activity 667760 3.4.15.1 Cl- nonessential activator over the pH range 5.0-10.0 81233 3.4.15.1 Cl- required 81213, 81247, 81251, 81259 3.4.15.1 Cl- required for hydrolysis of angiotensin I, not required for hydrolysis of bradykinin 81241