Erythrocytes: 5'-Adenylic Acid Deaminase Requirement for Ammonia or Monovalent Metal Ion

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Science  05 Jul 1963:
Vol. 141, Issue 3575, pp. 44-45
DOI: 10.1126/science.141.3575.44


5'-Adenylic acid deaminase free from sodium and potassium ion is prepared from erythrocytes by a convenient method. Like adenosine triphosphatase and adenylic kinase from erythrocytes, the deaminase is activated by some monovalent cations, but unlike these enzymes it requires the presence of a monovalent cation. In all three instances the pattern of activation by ions is similar and suggests a common mechanism.