4.1.1.5 Ba2+ about 110% activity at 1 mM 746865 4.1.1.5 Ba2+ about 180% activity at 1 mM 748494 4.1.1.5 Ca2+ about 160% activity at 1 mM 746865 4.1.1.5 Ca2+ about 170% activity at 1 mM 748494 4.1.1.5 Fe contains 0.537 nmol of Fe per mg of protein 4651 4.1.1.5 Fe2+ about 250% activity at 1 mM 748494 4.1.1.5 L-isoleucine about 450% activity at 1 mM 748494 4.1.1.5 L-leucine about 550% activity at 1 mM 748494 4.1.1.5 L-valine about 430% activity at 1 mM 748494 4.1.1.5 Mg2+ about 120% activity at 1 mM 746865