. 2024 Nov 14;300(12):107986. doi: 10.1016/j.jbc.2024.107986

Table 2.

Equations for the initial velocity from models I, II, and III

Model	$v_{i}$	$a_{1}$
I	$\frac{n_{0} + n_{1} \cdot [K^{+}]}{d_{0} + d_{1} \cdot [I n h] + d_{2} \cdot [K^{+}] + d_{3} {\cdot [K^{+}]}^{2}}$	$\frac{n_{1}}{d_{2}}$
II	$\frac{n_{0} + n_{1} \cdot [K^{+}]}{d_{0} + d_{1} \cdot [I n h] + d_{2} \cdot [I n h] \cdot [K^{+}] + d_{3} {\cdot [K^{+}] + d_{4} \cdot [I n h] \cdot [K^{+}]}^{2} + d_{5} \cdot {[K^{+}]}^{2}}$	$\frac{n_{1}}{d_{2} \cdot [I n h] + d_{3}}$
III	$\frac{n_{0} + n_{1} \cdot [K^{+}]}{d_{0} + d_{1} \cdot [I n h] + d_{2} \cdot [I n h] \cdot [K^{+}] + d_{3} {\cdot [K^{+}] + d_{4} \cdot [K^{+}]}^{2}}$	$\frac{n_{1}}{d_{2} \cdot [I n h] + d_{3}}$

The terms can be reorganized and a₁ from Equation 1 can be expressed for each model. The meaning of n_i's and d_i's are detailed in Table S2.