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. Author manuscript; available in PMC: 2015 Nov 3.
Published in final edited form as: FEBS Lett. 2014 Sep 12;588(21):3878–3885. doi: 10.1016/j.febslet.2014.08.030

Table 2.

Substrate binding, catalytic activity and inhibition of Y-CYP51A comparatively to Tulahuen CYP51.

CYP51
ortholog
Substrate binding parameters Turnover number
(nmol substrate/nmol
P450 /min)
Inhibition at I/E/S molar ratio
1:1:100, one hour reaction (%)
Kd,
(µM)
ΔA (% low-to-
high spin
transition)
Binding
efficiency
(ΔA/Kd)
VNI VNT VFV
Tulahuen 0.8 36 45 5.6±0.3 100 100 100
Y-CYP51A 1.54 48 31 2.0±0.2 51±2 35±3 99±0.8