Table 1.

CO combination rate constants following rapid mixing (106 M−1 sec−1)

	pH 6.0		pH 7.0		pH 8.0
Hemoglobin	−IHP	+IHP	−IHP	+IHP	−IHP	+IHP
HbA	0.18 Aa	0.10 A	0.18 A	0.09 A	0.31 A	0.17 A
βY35F	0.15 A	0.09 A	0.15 A	0.08 A	0.21 A	0.13 A
βY35A	0.31 A	0.20 A	0.34	0.19 A	1.1 0.3	0.28 A
					30% 70%

^a Designates autocatalytic nature of reaction.