Table 1. CYP125MRCA dissociation (K_d) constants (μM) for various steroid substrates using the Hill model^a.

Substrate	K d (μM) (n*)
Cholest-4-en-3-one	0.85 ± 0.02 (2.15)
Cholesterol	2.00 ± 0.05 (4.45)
Sitosterol	1.48 ± 0.03 (3.74)
Stigmast-4-en-3-one	1.61 ± 0.11 (1.98)
Stigmasterol	2.04 ± 0.12 (2.36)
Campesterol	4.19 ± 0.05 (3.68)
Cholecalciferol (VD3)	1.60 ± 0.22 (1.84)

^a*n is the Hill coefficient as shown in the Hill equation (eqn (1)).