Table 2.

Geometries of an azides bound to Cu_B, in the crystal equilibrated with 20 mm azide solution

Letters A and B indicate the structures A and B of heme a₃, respectively. Other atomic names are given in Fig. 3. Heme a₃ plane was calculated on the basis of FE, NA, NB, NC, and ND atoms in each heme a₃ structure by geomcalc program (38).