Structure of human hemoglobin C: a disease with intraerythrocytic crystals.

Crystals of human cyanomethemoglobin C (beta 6A3 glu leads to Lys) crystallized in the orthorhombic space group P212121, A = 158(1), B = 65.5(4), C = 54.9(5) A with Z =4. Single crystal electron micrographs show filaments parallel to the b direction. The molecules are unusually densely packed compared to other hemoglobin crystals, and this may be related to the ease of intraerythrocytic crystallization.

Crystallography and oriented single crystal electron microscopy of hemoglobin deer II, a hemoglobin that exhibits matchstick-shaped erythrocytes.

Deer hemoglobin beta chain type II has been crystallized and preliminary diffraction data and oriented single crystal transmission electron micrographs have been obtained. The crystals are monoclinic P21 with Z = 4. The electron micrographs show a herringbonelike structure in the ab plane with open rectangular solvent channels and a fiber-like arrangement of molecules perpendicular to this plane.