Table 1. Ligand binding and hexacoordination rates for different plants Hbs.

Eudicot plants (light blue). Eudicot plants that also have sHbs (dark blue). Monocot plants (green).

¹×10⁶ M⁻¹ s⁻¹;

²s⁻¹;

³×10⁶ M⁻¹;

⁴$K_{O_2.pent}/(1+K_H)$;

⁵F_H = K_H/(1 + K_H);

⁶Rate constants for the metastable form (Hb_O,H).