earticle

영어

Haemoglobin is an interesting physiologically significant protein composed of specific functional prosthetic haem and globin moieties. In recent decades, there has been substantial interest in attempting to understand the structural basis and functional diversity of avian haemoglobins (Hbs). Towards this end, purification, crystallization, preliminary X-ray diffraction and molecular-replacement studies have been carried out on Amaurornis phoenicurus Hb. Crystals were grown by the hanging drop vapor-diffusion method using PEG 2000 and NaCl as precipitants. The crystals belonged to the primitive monoclinic system P21, with unit-cell parameters a = 65.33 Å, b = 93.14 Å, c = 98.54 Å, β = 100.48o; a complete data set was collected to a resolution of 2.6 Å. The Matthews coefficient of 2.30 Å3 Da-1 for the crystal indicated the presence of two α2β2 tetramers in the asymmetric unit.