Thyroxine-Protein Interactions

Thyroxine-ProteinInteractions.V Vol.243, No. 9 binding globulin which was homogeneous when subjected to disc electrophoresis and immunoelectrophoresis but dissociated into at least two components in the ultracentrifuge.In the present report we describe a procedure for the isolation of a thyroxinebinding globulin which shows the presence of a single component when subjected to ultracentrifugal analysis and which is homogeneous by the criteria of electrophoresis in starch gel, immunoelectrophoresis, and disc electrophoresis.Some of the chemical and physical properties of the binding protein are also given.