Table 2.

Model parameters obtained by weighted least-squares fitting of selected models to reaction progress curves for noncrowded and crowded media

				Ficoll-400k		PEG-6000
Model	Parameters	Dilute	Sucrose	100 g/L	150 g/L	100 g/L	150 g/L
mama	ka∗	2.67	0.08	0.13	0.10	0.07	0.44
	kd†	0.17	0.17	0.19	0.19	0.19	0.20
	Pg‡	<10−5	<10−5	<10−5	<10−5	<10−5	<10−5
mamai	ka	1.12	0.76	0.26	0.48	0.82	0.24
	kd	45.9	16.8	0.19	13.0	40.4	7.11
	k1	19.5	3.43	2.79	5.54	5.88	1.97
	k2	0.21	0.17	0.48	0.23	0.19	0.27
	Pg	>0.99	<10−5	<10−5	>0.99	>0.99	>0.99
stst	ka	1.19	6.78	0.31	1.14	1.46	0.29
	kd	49.1	11.3	2.16	34.2	32.2	7.59
	k1	19.0	1.91	2.60	5.38	2.74	1.80
	k2	0.22	0.19	0.50	0.22	0.22	0.29
	τa§	6.22	0.006	0.80	0.02	0.01	2.48
	τd	0.86	0.17	0.54	0.03	0.03	2.19
	h	0.02	0.51	0.16	0.19	0.24	0.24
	Pg	>0.99	>0.99	>0.99	>0.99	>0.99	>0.99
svma	ka	0.34	0.19	0.23	0.16	0.14	0.08
	kd	0.18	0.35	0.26	0.24	0.26	0.28
	k1	2·10−7	0.55	0.46	0.15	0.34	0.11
	k2	0.31	0.98	1.57	0.86	1.36	0.67
	α	−0.06	−0.25	−0.16	−0.11	−0.17	−0.24
	β	−0.03	−0.19	−0.14	−0.07	−0.10	−0.06
	Pg	>0.99	>0.99	>0.99	>0.99	>0.99	>0.99
svsv	ka	0.25	0.33	0.15	0.09	0.15	0.07
	kd	0.20	1.30	1.57	1.55	0.27	0.28
	k1	0.0001	2.61	111	226	0.30	0.01
	k2	0.22	0.71	12.3	26.1	0.93	0.36
	α	−0.06	−0.35	−0.05	−0.005	−0.18	−0.19
	β	0.00	−0.26	0.04	0.07	−0.12	−0.01
	γ	−0.06	−0.71	−0.78	−0.73	0.15	−0.19
	Pg	>0.99	>0.99	>0.99	>0.99	>0.99	>0.99

^∗Units in 10⁻⁵ M^–1s^–1.

^†Units for k_d, k₁, and k₂ are s^–1.

^‡Probability P_g = Pr[χ²(ν) > ${\chi }_0^2$] (see Materials and Methods).

^§Units for τ_a and τ_d are seconds.