Effects of Univalent Cations on the Inductive Formation of Nitrate Reductase 1
AUTOR(ES)
Nitsos, Ronald E.
RESUMO
An investigation has been made to determine the effectiveness of univalent cations as cofactors for the inductive synthesis of nitrate reductase. In these experiments K+ functions more effectively as the univalent cation activator than other univalent cations. Substitution of Rb+ for K+ resulted in enzyme formation at a rate of about one-half of that obtained with K+. Sodium, Li+, or NH4+ either failed to stimulate or completely inhibited the inductive formation of the enzyme. When no univalent cations were present in the induction medium, enzyme formation was delayed for an initial 3-hour period in contrast to the normal one-hour delay in enzyme formation where adequate K+ was present in the induction medium.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=550561Documentos Relacionados
- Effects of Univalent Cations on the Activity of Particulate Starch Synthetase 1
- Effects of univalent cations on the immunoelectrophoretic behavior of pyruvic kinase.
- In Vitro Formation of Nitrate Reductase Using Extracts of the Nitrate Reductase Mutant of Neurospora crassa, nit-1, and Rhodospirillum rubrum
- Further Studies on the Activation of Acetic Thiokinase by Magnesium and Univalent Cations 12
- THE EFFECT OF UNIVALENT CATIONS ON THE BINDING OF sRNA TO THE TEMPLATE-RIBOSOME COMPLEX*