Table 1. Properties of human hemoglobins... | American Society of Hematology

Table 1.

Properties of human hemoglobins

Hb	Structure	P₅₀^*	Hill^†	Bohr^‡	2,3-BPG^1-153
Gower-1	ζ₂ε₂	1.4 ± 0.06	1.7 ± 0.24	−0.25	0.09
Gower-2	α₂ε₂	2.7 ± 0.10	2.3 ± 0.02	−0.51	0.17
Portland-2	ζ₂β₂	1.9 ± 0.17	1.6 ± 0.06	−0.10	0.30
A	α₂β₂	3.2 ± 0.14	2.9 ± 0.36	−0.54	0.29

Hb	Structure	P₅₀^*	Hill^†	Bohr^‡	2,3-BPG^1-153
Gower-1	ζ₂ε₂	1.4 ± 0.06	1.7 ± 0.24	−0.25	0.09
Gower-2	α₂ε₂	2.7 ± 0.10	2.3 ± 0.02	−0.51	0.17
Portland-2	ζ₂β₂	1.9 ± 0.17	1.6 ± 0.06	−0.10	0.30
A	α₂β₂	3.2 ± 0.14	2.9 ± 0.36	−0.54	0.29

torr;

log(Y/1 − Y)/log PO₂;

Δlog P₅₀/ΔpH in the alkaline region;

apparent binding constant (mM) calculated from half-saturation point.