Table 1.

Effects of structure occupancy on the B-factor of heme a₃

Azide concentrations and exposure periods are indicated with the term “XX mM_Ydays.” For structure A, the nonshifted conformation is closely similar to the conformation of the resting oxidized state; structure B is the azide-induced shifted conformation. The averaged B-factors were calculated using the atoms of the composing porphyrin ring of heme a or heme a₃.