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. 2018 Jun 27;474(2214):20180106. doi: 10.1098/rspa.2018.0106

Table 1.

Conserved moieties associated with chemostat selection. Across some biochemical subgroups (moiety), there are constraints (conserved quantity) on a corresponding sum of species representing the total of the moiety. The conserved quantities remain constant over the course of a simulation. Q represents contributions of other species to charge imbalance across the membrane. The symbol Σ represents charge contributions from Markov states of channels and transporters. The definition of Σ, and all species can be found in the electronic supplementary material and code.

moiety conserved quantity
conserved moieties common to all variants (A,B,C)
1 K1 channel CK1 + OK1
2 K channel S00,K + S10,K + S20,K + S01,K + S11,K + S21,K
3 Kp channel CKp + OKp
4 Na channel S000,Na + S100,Na + S200,Na + S300,Na + S010,Na + S110,Na + S210,Na + S310,Na + S001,Na + S101,Na + S201,Na + S301,Na + S011,Na + S111,Na + S211,Na + S311,Na
5 LCC S000,LCC + S010,LCC + S020,LCC + S100,LCC + S110,LCC + S120,LCC + S001,LCC + S011,LCC + S021,LCC + S101,LCC + S111,LCC + S121,LCC
6 Na+/K+ ATPase P1NaK + P2NaK + P3NaK + P4NaK + P5NaK + P6NaK + P7NaK + P8NaK + P9NaK + P10NaK + P11NaK + P12NaK + P13NaK + P14NaK + P15NaK
7 NCX P1NCX + P2NCX + P3NCX + P4NCX + P5NCX + P6NCX
8 troponin TRPN + TRPNCa
9 calmodulin CMDN + CMDNCa
dynamic ion concentrations (A)
chemostats MgADP, MgATP, Pi, H+
10 K+ ion K+i + K+e + 2P1NaK + P2NaK + P12NaK + 2P13NaK + 2P14NaK +2P15NaK
11 Na+ ion Na+i + Na+e + P4NaK + 2P5NaK + 3P6NaK + 3P7NaK + 3P8NaK + 2P9NaK + P10NaK + 3P1NCX + 3P6NCX
12 Ca2+ ion Ca2+i + Ca2+e + 2S001,LCC + 2S011,LCC + 2S021,LCC + 2S101,LCC + 2S111,LCC + 2S121,LCC + P3NCX + P4NCX + TRPNCa + CMDNCa
13 charge Q − K+i − Na+i − 2Ca2+i + 2TRPN + 2CMDN + Σ
dynamic intracellular ion concentrations (B)
chemostats MgADP, MgATP, Pi, H+, K+e, Na+e, Ca2+e
10 charge Q − K+i − Na+i − 2Ca2+i + 2TRPN + 2CMDN + Σ
constant ion concentrations (C)
chemostats MgADP, MgATP, Pi, H+, K+i, K+e, Na+i, Na+e, Ca2+i, Ca2+e