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. Author manuscript; available in PMC: 2014 Dec 1.
Published in final edited form as: Free Radic Biol Med. 2013 Oct 9;65:10.1016/j.freeradbiomed.2013.10.001. doi: 10.1016/j.freeradbiomed.2013.10.001

Table 1.

Estimated model parameter values for GR kinetics obtained from different species/sources.

Rat liver [27] Mouse liver [28] Erythrocytes [34] Bovine liver [33] P. blakesleeanus[30]
Parameter Value Sensitivity Value Sensitivity Value Sensitivity Value Sensitivity Value Sensitivity
klf (μM-1 min-1) 3.4×103 0.34 2.8×103 0.15 3.3×103 0.25 9.9×102 0.41 2.3×103 0.26
klr (min-1) 1.5×102 4.3×10-3 1.5×102 1×10-6 2.5×105 0.04 6.5×104 0.05 6.4×104 0.07
k2f (min-1) 1.1×106 0.03 1.9×107 0.03 6.7×107 0.024 6.7×107 0.041 6.7×107 0.1
k2r (μM-1 min-1) 1.3×104 0.035 - - 9.1×104 0.058 3.4×104 0.06 4.6×106 0.22
k3f (min-1) 7.8×104 0.31 3.4×104 0.54 2.7×104 0.54 1.3×105 0.24 1.0×105 0.32
k4f (min-1) 5.6×104 0.07 3.2×104 0.28 1.7×105 0.054 8.1×104 0.20 8.0×104 0.22
k4r (μM-1 min-1) - - - - - - 10.2 0.06 1.32 0.24
k5f (min-1) 9.5×104 0.24 2.1×105 0.03 5.8×104 0.2 2.2×105 0.11 1.2×105 0.1
Kp (μM) 93 0.24 - - 237 0.22 50 0.42 152 0.31
KB (μM) 56 0.39 88 0.3 54 0.25 22 0.16 25.7 0.22
KIA (μM) 1.0×107 4×10-7 436 0.06 8.0×106 8×10-7 8×106 1×10-6 82 0.08
α 2.83 0.26 1.78 0.27 1.2 0.20 9.8 0.13 2.7 0.2
KH (μM) 0.1a 0.1a 0.1a 0.1a 0.03 0.029
Keq,GRb 1.6×108 9.2×107 1.6×108 1.2×108 2.1×108
a

Parameter fixed based on the pK information from [34].

b

Not an adjustable parameter and calculated based on thermodynamic data. ‘-’These parameters do not play a role in fitting the experimental data for the respective data set and can be fixed based on the other data sets.