Hysteretic interaction of NADH and Mg2+ with mammalian NADH:CoQ reductase from beef heart
In: FEBS Letters, , Heft 2, S. 268-270
Online
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Zugriff:
Preincubation of submitochondrial particles (SMP) from beef heart in a reaction mixture containing low concentrations of Mg2+ induces a time lag in the NADH:oxidase activity. Preconditioning of the SMP by NADH, but not by NAD+, prevents the Mg2+-related time lag. The data obtained show that there exists a tight binding site for Mg2+ regulating the rate of electron transfer from NADH to the natural acceptor. The ability of Mg2+ to form a catalytically inactive complex with the enzyme is regulated by NADH.
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Hysteretic interaction of NADH and Mg2+ with mammalian NADH:CoQ reductase from beef heart
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Autor/in / Beteiligte Person: | Tsartsidze, M.A. ; Lomsadze, B.A. ; Dekanosidze, N.Z. ; Tushurashvili, P.R. ; Kekelidze, T.N. ; Inasaridze, N.P. |
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Zeitschrift: | FEBS Letters, , Heft 2, S. 268-270 |
Veröffentlichung: | Published by Elsevier B.V. |
Medientyp: | unknown |
ISSN: | 0014-5793 (print) |
DOI: | 10.1016/0014-5793(89)80542-3 |
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