Structure of human R-state aquomethemoglobin at 2.0 Å resolution.

The crystal structure of tetrameric (αβ)(2) R-state human adult aquomethemoglobin is reported at 2.0 Å resolution. The asymmetric unit contained one αβ subunit pair. The R-state crystal belonged to space group P4(1)2(1)2, with unit-cell parameters a = b = 53.6, c = 192.8 Å. An Fe-bound water molecule was modeled into the heme distal pockets of each of the… CONTINUE READING