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. 2012 Aug 20;3:322. doi: 10.3389/fphys.2012.00322

Table 2.

Parameters of RyR gating.

Parameter Value
KCa (μM) 0.6
KMg (μM) Fitted parameter
fCa 0.046
fMg Fitted parameter
KO0 10 800
KOL 0.5
KCL 0.89
KCI 3.0
KI (μM) 760
[Mg] (mM) 1.0

KCa – calcium dissociation constant of the ion-free closed state C00.

KMg – magnesium dissociation constant of the ion-free closed state C00.

KO0 – dissociation constant of the ion-free open state O00.

fCa – allosteric factor coupling calcium binding to channel opening.

fMg – allosteric factor coupling magnesium binding to channel opening.

KOL – dissociation constant of the L-mode open state OL.

KCL – dissociation constant of the L-mode closed state CL.

KCI – dissociation constant of the inactivated state I.

KI – inhibitory constant of Mg2+ ions at the low-affinity inhibition site.

[Mg] – free Mg2+ concentration.