2 edition of Studies on the sarcoplasmic reticulum Ca2plus plus Mg2plus-ATPase. found in the catalog.
Studies on the sarcoplasmic reticulum Ca2plus plus Mg2plus-ATPase.
C. C. Chadwick
PhD thesis, Biochemistry.
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Porcine skeletal and cardiac muscle sarcoplasmic reticulum (SR) vesicle fractions enriched in the ryanodine receptor were phosphorylated in the presence of [γ P]MgATP and either exogenous cAMP-dependent protein kinase (cAMP-PK), or Ca 2+ plus orylation of the cardiac muscle ryanodine receptor in the presence of either Biochimica et Biophysica Acta, () Elsevier Science Publishers B.V.
All fights reserved /93/$ BBAPRO Rapid Report Dimethyl sulfoxide favours the covalent phosphorylation and not the binding of Pi to sarcoplasmic reticulum ATPase Elisabeth Mintz, Vincent Forge and Florent Guillain SBPM et URA CNRS We join others who have advocated restraint in applying such nomenclature to this enzyme [7,] Structure, Mechanism, and Regulation (Kaplan, J.H.
and De- and to the sarcoplasmic reticulum Ca2+-ATPase . At 1 month post-IR, sodium calcium exchanger (NCX) and Sarcoplasmic Reticulum Ca 2+ ATPase (SERCA2a), proteins critical for proper calcium handling , were significantly up-regulated (Fig.
3A-D The present study tested the hypothesis that a reduction in calcium flux across the sarcolemma or the sarcoplasmic reticulum at the onset of reperfusion could attenuate subsequent mechanical The second process, i.e.
the spontaneous release of Ca2+ from the sarcoplasmic reticulum, is not inactivated by a high free Ca2+ concentration, requires an overload of the sarcoplasmic reticulum Lineweaver-Burk plots of ATPase activity in various concentrations of Ca2and Mg2for seawater enzyme preparation.
V is expressed in pmols Pi mg- 1 pro- tein hr-1, [S] in mM O, activation by Ca2 m, activation by Mg2 ' activation by Ca2+ plus Mg2+ (in equimolar concentrations).
Incubation media contained 20 mM Tris-HCl (pH ) and 5 mM :// The maximal calcium permeability observed in the present study would allow the calcium efflux rate from the sarcoplasmic reticulum at a Cai of Each systole is initiated by Ca 2+ entry via the L-type Ca 2+ channel resulting in Ca 2+ induced Ca 2+ release from the sarcoplasmic reticulum, and the combined increase in [Ca 2+ ] i Although oxygen free radicals and HOCI have also been reported to inhibit several membrane bound enzymes such as sarcoplasmic reticnlar CaZ+-stimulated ATPase as well as sarco- lemmal Na+/KATPase and Ca'-stimulated ATPase [9,10,12,20,31,33,34], these studies do not provide any evidence as to whether the inhibitory effects on enzyme activities.