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We have partially purified the CO2 reductase, present in green potato tuber chloroplasts, as a latent form. Illumination of the chloroplasts in the absence of substrate, bicarbonate, activated the enzyme, which could then be obtained in soluble forms. Purification of the enzyme was achieved by
The oxidation of malate and succinate by sweet potato mitochondria (Ipomoea batatas [L.] Lam.) was blocked only partly by inhibitors of complexes III (2-heptyl-4-hydroxyquinoline-N-oxide) and IV (cyanide and azide). The respiration insensitive to inhibitors of complexes III and IV was inhibited by
The aim of this investigation was to isolate and characterize a neuropeptide-degrading carboxypeptidase from the muscular and mucosal layers of the human stomach. The carboxypeptidase was solubilized from membrane preparations of gastric muscle and mucosa using Triton X-100. The