Crystallization of the haptoglobin–hemoglobin complex

Abstract

Two orthorhombic forms of crystals of the haptoglobin–hemoglobin complex were obtained using polyethylene glycol as precipitant. These crystals did not diffract well enough for data collection and work on the complex is no longer continued. However, the description of the crystallization conditions may be useful in future endeavors to obtain suitable crystals.