Abstract
The dilute solution behaviour of the transmembrane domain (TMD) of the human erythrocyte anion exchanger Band 3 was studied by analytical ultracentrifugation. Sedimentation velocity and equilibrium studies of the TMD solubilized with the detergent C12E8 demonstrate that the protein is a stable dimer in the concentration range 0.1 to 1 mg/ml. There is no evidence of a dissociation at low concentrations or of an association at higher concentrations. Hydrodynamic calculations applying a prolate ellipsoid of revolution and assuming a hydration of w=0.35 result in an asymmetrical particle with an axial ratio (a/b) of ∼3.5.
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Received: 8 January 1998 / Revised version: 21 April 1998 / Accepted: 22 April 1998
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Cölfen, H., Boulter, J., Harding, S. et al. Ultracentrifugation studies on the transmembrane domain of the human erythrocyte anion transporter Band 3 in the detergent C12E8 . Eur Biophys J 27, 651–655 (1998). https://doi.org/10.1007/s002490050177
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DOI: https://doi.org/10.1007/s002490050177