N(2)-(4-aminobutanoyl)-L-arginine + H2O = 4-aminobutanoate + L-arginine
n(2)-(4-aminobutanoyl)-l-arginine + h2o = 4-aminobutanoate + l-arginine
N(2)-(4-aminobutanoyl)-L-arginine + H2O = 4-aminobutanoate + L-arginine
n(2)-(4-aminobutanoyl)-l-arginine + h2o = 4-aminobutanoate + l-arginine