1.17.2.2 Ba2+ reactivation requires addition of pyrroloquinoline quinone and is dependent on Ca2+. Sr2+ and Ba2+ are equally competent at reactivating the enzyme in conjunction with pyrroloquinoline quinone. Mg2 + is much less effective 691032 1.17.2.2 Ca2+ heme-containing inactive protein in inclusion bodies is renatured and reactivated with pyrroloquinoline quinone and Ca2+ to give active enzyme 690799 1.17.2.2 Ca2+ reactivation requires addition of pyrroloquinoline quinone and is dependent on Ca2+. Sr2+ and Ba2+ are equally competent at reactivating the enzyme in conjunction with pyrroloquinoline quinone. Mg2 + is much less effective 691032 1.17.2.2 Sr2+ reactivation requires addition of pyrroloquinoline quinone and is dependent on Ca2+. Sr2+ and Ba2+ are equally competent at reactivating the enzyme in conjunction with pyrroloquinoline quinone. Mg2 + is much less effective 691032