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Property Organism Value Units ID Details
Density of active ion channels on membrane Amoeba Dictyostelium discoideum ~1 active channel/µm^2 110724 Muller U, Malchow D,...
Radius of the crystal size of sodium ion Generic 0.9 (Table - link) Angstrom 104162 Stein, Wilfred D., Transport...
Radius of the crystal size of potassium ion Generic 1.33 (Table - link) Angstrom 109742 Stein, Wilfred D., Transport...
Temperature dependence (Q10) of transport by ion channels Generic ~1.2 to 1.4 Unitless 109163 Latorre R, Miller C....
Membrane potential of sodium ion in axon Squid -60 (Table - link) mV 104085 Stein, Wilfred D., Channels...
Typical single ion channel conductance (how many ions per second can pass through the channel) Generic ≥10^6 ions/sec 110725 Cahalan MD, Wulff H,...
Concentration of calcium ion in resting mitochondria Mammalian tissue culture cell 310 (±30) nM 101700 Akos A. Gerencser and...
Charge/mass (m/z) ratio of immonium ion of phosphotyrosine Generic 216.043 unitless 105738 Mann M, Ong SE, Grønborg M...
Physiologically relevant concentration of potassium ion (K+) Bacteria Escherichia coli 200 mM 115759 Theillet FX et al., ...
Transport rate of ion through mitochondrial porin Unspecified 10^8 to 10^9 ions/sec 109168 Latorre R, Miller C....
Concentration of ammonium ion in unfertilized egg African clawed frog Xenopus laevis 3 mM 101480 Shiokawa et al. Ammonium...
Cytoplasmic K+ (potassium ion) concentration in roots Plants 80 mM 112370 Hirsch RE, Lewis BD,...
Lifetime of single hydronium (H3O+) ion at 20°C Generic 1 (Table - link) ps 106550 Hille B., Ion channels...
Ion-selective microelectrode measurements of pH and of K+, and Cl- concentrations in cells of open and closed stomatal complexes Asiatic dayflower Commelina communis Table - link % 110399 Leigh R.A. (1997). Solute...
Ion selectivity of MscS [Small-conductance mechanosensitive channels] Bacteria Escherichia coli PCl : PK = 1 : 1.5–3.0 N/A 112287 Martinac B, Saimi Y,...
Ion conductivity of erythrocyte membrane at 37˚C vertebrates 1.54 S/m 103949 Jaspard F, Nadi M, Rouane...
Free ion concentrations and equilibrium potentials for mammalian skeletal muscles Mammals Table - link N/A 106547 Hille B., Ion channels...
Reduction of the energies of transmembrane ionic diffusion by ion channels Generic From 250 to 20 kJ/mol 109161 Latorre R, Miller C....
States of phosphate ion in aqueous solution at neutral pH Unspecified 62% HPO42− and 38% H2PO4− % 106514 Orij R, Brul S, Smits...
Metal ion complexation constant for ATP with Mg2+ Unspecified 4.34 (±0.07) see comments 101872 Smith, R. M., A. E. Martell...