TABLE 3.
Model parameters: TCA cycle
Symbol | Value | Units | Description | Eq. | Ref.* |
---|---|---|---|---|---|
![]() |
3.2 | s−1 | Catalytic constant of CS | 13 | a |
![]() |
0.4 | mM | Concentration of CS | 13 | b |
![]() |
1.26 10−2 | mM | Michaelis constant for AcCoA | 13 | a |
![]() |
6.4 10−4 | mM | Michaelis constant for OAA | 13 | a |
CKint | 1.0 | mM | Sum of TCA cycle intermediates' concentration | 14 | c |
![]() |
12.5 | s−1 | Forward rate constant of ACO | 15 | a |
![]() |
2.22 | Equilibrium constant of ACO | 15 | a | |
![]() |
1.94–16.3 | s−1 | Rate constant of IDH | 16 | a |
![]() |
0.109 | mM | Concentration of IDH | 16 | b |
![]() |
0.19 | mM | Inhibition constant by NADH | 16 | a |
![]() |
6.2 10−2 | mM | Activation constant by ADP | 16 | a |
[H+] | 2.5 10−5 | mM | Matrix proton concentration | 16 | k |
kh,1 | 8.1 10−5 | mM | Ionization constant of IDH | 16 | a |
kh,2 | 5.98 10−5 | mM | Ionization constant of IDH | 16 | a |
![]() |
1.52 | mM | Michaelis constant for isocitrate | 16 | a |
![]() |
0.923 | mM | Michaelis constant for NAD+ | 16 | a |
![]() |
0.00141 | mM | Activation constant for Ca2+ | 16 | a |
![]() |
0.15–5.0 | s−1 | Rate constant of KGDH | 17 | a |
![]() |
0.5 | mM | Concentration of KGDH | 17 | f |
![]() |
1.94 | mM | Michaelis constant for αKG | 17 | a |
![]() |
38.7 | mM | Michaelis constant for NAD | 17 | a |
![]() |
0.0308 | mM | Activation constant for Mg2+ | 17 | a |
![]() |
1.27 10−3 | mM | Activation constant for Ca2+ | 17 | a |
nαKG | 1.2 | Hill coefficient of KGDH for αKG | 17 | f | |
Mg2+ | 0.4 | mM | Mg2+ concentration in mitochondria | 17 | d |
![]() |
0.127 | mM−1 s−1 | Forward rate constant of SL | 18 | f |
![]() |
3.115 | Equilibrium constant of the SL reaction | 18 | a | |
[CoA] | 0.02 | mM | Coenzyme A concentration | 18 | b |
![]() |
1.0 | s−1 | Rate constant of SDH | 19 | f |
![]() |
0.5 | mM | SDH enzyme concentration | 19 | f |
![]() |
3.0 10−2 | mM | Michaelis constant for succinate | 19 | e |
![]() |
1.3 | mM | Inhibition constant by fumarate | 19 | e |
![]() |
0.15 | mM | Inhibition constant by oxalacetate | 19 | e |
![]() |
0.83 | s−1 | Forward rate constant for FH | 20 | a |
![]() |
1.0 | Equilibrium constant of FH | 20 | a | |
kh1 | 1.1310−5 | mM | Ionization constant of MDH | 22 | j |
kh2 | 26.7 | mM | Ionization constant of MDH | 22 | a |
kh3 | 6.68 10−9 | mM | Ionization constant of MDH | 23 | j |
kh4 | 5.62 10−6 | mM | Ionization constant of MDH | 23 | j |
koffset | 3.99 10−2 | pH-independent term in the pH activation factor of MDH | 22 | a | |
![]() |
2.775 101 | s−1 | Rate constant of MDH | 21 | f |
![]() |
0.154 | mM | Total MDH enzyme concentration | 21 | b |
![]() |
1.493 | mM | Michaelis constant for malate | 21 | a |
![]() |
3.1 10−3 | mM | Inhibition constant for oxalacetate | 21 | a |
![]() |
0.2244 | mM | Michaelis constant for NAD+ | 21 | a |
![]() |
0.644 | s−1 | Forward rate constant of AAT | 24 | a |
![]() |
6.6 | Equilibrium constant of AAT | 24 | a | |
KC_ASP | 0.01 | s−1 | First order rate constant of aspartate consumption | 25 | f |
Model parameters: oxidative phosphorylation | |||||
ra | 6.394 10−10 | s−1 | Sum of products of rate constants | 26,27 | g,h |
rb | 1.762 10−13 | s−1 | Sum of products of rate constants | 27 | g,h |
rc1 | 2.656 10−19 | s−1 | Sum of products of rate constants | 26 | g,h |
rc2 | 8.632 10−27 | s−1 | Sum of products of rate constants | 26 | g,h |
r1 | 2.077 10−18 | Sum of products of rate constants | 26,27 | g,h | |
r2 | 1.728 10−9 | Sum of products of rate constants | 26,27 | g,h | |
r3 | 1.059 10−26 | Sum of products of rate constants | 26,27 | g,h | |
ρres | 0.0006–0.05 | mM | Concentration of electron carriers (respiratory complexes I-III-IV) | 26,27 | g,h |
Kres | 1.35 1018 | Equilibrium constant of respiration | 28 | g,h | |
ρres(F) | 0.0045 | mM | Concentration of electron carriers (respiratory complexes II-III-IV) | ||
ΔΨB | 0.05 | V | Phase boundary potential | 26,27,31 | g,h |
g | 0.85 | Correction factor for voltage | 26,27 | g,h | |
Kres(F) | 5.765 1013 | Equilibrium constant of FADH2 oxidation | 29 | ||
[FADH2] | 1.24 | mM | Concentration of FADH2 (reduced) | 29 | |
[FAD] | 0.01 | mM | Concentration of FAD (oxidized) | 29 | |
pa | 1.656 10−5 | s−1 | Sum of products of rate constants | 31,32 | g,h |
pb | 3.373 10−7 | s−1 | Sum of products of rate constants | 32 | g,h |
pc1 | 9.651 10−14 | s−1 | Sum of products of rate constants | 31 | g,h |
pc2 | 4.585 10−14 | s−1 | Sum of products of rate constants | 31 | g,h |
p1 | 1.346 10−8 | Sum of products of rate constants | 31,32 | g,h | |
p2 | 7.739 10−7 | Sum of products of rate constants | 31,32 | g,h | |
p3 | 6.65 10−15 | Sum of products of rate constants | 31,32 | g,h | |
ρF1 | 0.06–1.8 | mM | Concentration of F1F0-ATPase | 31,32 | g,h |
KF1 | 1.71 106 | Equilibrium constant of ATP hydrolysis | 33 | g,h | |
R | 8.315 | V C mol−1 °K−1 | Gas constant | ||
T | 310.16 | °K | Mammalian body temperature | ||
F | 96480 | C mol−1 | Faraday constant | ||
Pi | 20.0 | mM | Inorganic phosphate concentration | 33 | i |
Cm | 15.0 | mM | Total sum of mito adenine nucleotides | 34 | d |
VmaxANT | 0.05–24.0 | mM s−1 | Maximal rate of the ANT | 35 | g,h |
h | 0.5 | Fraction of ΔΨm | 35 | g,h | |
[ADP]i | 0.05–0.2 | mM | Cytoplasmic ADPi concentration | 35 | |
[ATP]i | 6.5 | mM | Cytoplasmic ATPi concentration | 35 | d |
gH | 0.01 | mM s−1 V−1 | Ionic conductance of the inner membrane | 36 | g,h |
ΔpH | −0.6 | pH units | pH gradient across the inner membrane | 37 | k |
CPN | 10.0 | mM | Total sum of mito pyridine nucleotides | 30 | b |
Cmito | 1.812 | mM V−1 | Inner membrane capacitance | 2 | l,m |
Model parameters: calcium dynamics | |||||
![]() |
0.625–1.25 | μM s−1 | Vmax uniport Ca2+ transport | 38 | g,h |
[Ca2+]i | 2.0 10−2–1.2 | μM | Cytosolic Ca2+ concentration | 38 | i |
ΔΨ° | 0.091 | Volts | Offset membrane potential | 38 | g,h |
Kact | 3.8 10−4 | mM | Activation constant | 38 | g,h |
Ktrans | 0.019 | mM | Kd for translocated Ca2+ | 38 | g,h |
L | 110.0 | Keq for conformational transitions in uniporter | 38 | g,h | |
na | 2.8 | Uniporter activation cooperativity | 38 | g,h | |
![]() |
0.005–0.2 | mM s−1 | Vmax of Na+/Ca2+ antiporter | 39 | g,h |
b | 0.5 | ΔΨm dependence of Na+/Ca2+ antiporter | 39 | g,h | |
KNa | 9.4 | mM | Antiporter Na+ constant | 39 | g,h |
[Na+]i | 10.0 | mM | Cytosolic Na+ concentration | 39 | g,h |
KCa | 3.75 10−4 | mM | Antiporter Ca2+ constant | 39 | g,h |
n | 3 | Na+/Ca2+ antiporter cooperativity | 39 | g,h | |
f | 0.0003 | Fraction of free [Ca2+]m | 12 | g,h |
References: a, Dudycha et al., 2000; b, Albe et al., 1990; c, calculated from Jeffrey et al., 1999; d, Corkey et al., 1986; e, Singer, 1966; f, adjusted; g, Magnus and Keizer, 1997; h, Magnus, 1995; i, Crompton, 1999; j, calculated from data of Emyanitoff and Kelly, 1982; k, Jung et al., 1989; l, Gunter and Pfeiffer, 1990; m, Wojtczak et al., 1986.