Table 5.

Parameters for O₂ and CO binding to wild-type and variant forms of horse heart myoglobin

Protein	O2			CO
	kon × 10−6 (M−1 s−1)	koff (s−1)	KO2 × 10−6 (M−1)	kon × 10−6 (M−1 s−1)	koff × 102 (s−1)	KCO × 10−7 (M−1)
Wild-type Mb	22.3	24.2	0.92	0.51	3.51	1.45
F46L	17.1	44.3	0.39	0.62	5.98	1.04
F46L/I107F	17.1	25.2	0.68	0.55	3.31	1.66
T39I/F46L/I107F	19.6	23.5	0.83	0.76	4.8	1.58
T39I/K45D/F46L/I107F	22.2	24.3	0.91	0.9	5.08	1.77