Radioimmunoelectrophoretic analysis of proteins binding 3, 3', 5'-triiodothyronine in human serum. 1981

K Miyai, and E Nagamachi, and Y Kobayashi, and F Watanabe

The binding of purified 131I-3, 3', 5'-triiodothyronine (reverse T3) (rT3) to normal human serum components was investigated by a radioimmunoelectrophoretic technique. When anti-whole human serum was used, five distinct arcs of radioactivity were observed. Evidence was obtained that five of these radioactive arcs were not artifacts, but were due to components binding rT3. From the radioimmunoelectrophoretic patterns with specific antisera, five of these components were identified as thyroxine binding prealbumin, albumin, thyroxine binding globulin (TBG) and alpha 1-and beta-lipoproteins. No radioactive arc of TBG was detected in serum from a patient with TBG deficiency.

UI MeSH Term Description Entries
D007122 Immunoelectrophoresis A technique that combines protein electrophoresis and double immunodiffusion. In this procedure proteins are first separated by gel electrophoresis (usually agarose), then made visible by immunodiffusion of specific antibodies. A distinct elliptical precipitin arc results for each protein detectable by the antisera.
D011228 Prealbumin A tetrameric protein, molecular weight between 50,000 and 70,000, consisting of 4 equal chains, and migrating on electrophoresis in 3 fractions more mobile than serum albumin. Its concentration ranges from 7 to 33 per cent in the serum, but levels decrease in liver disease. Proalbumin,Transthyretin
D011485 Protein Binding The process in which substances, either endogenous or exogenous, bind to proteins, peptides, enzymes, protein precursors, or allied compounds. Specific protein-binding measures are often used as assays in diagnostic assessments. Plasma Protein Binding Capacity,Binding, Protein
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000510 Alpha-Globulins Serum proteins that have the most rapid migration during ELECTROPHORESIS. This subgroup of globulins is divided into faster and slower alpha(1)- and alpha(2)-globulins. Alpha-Globulin,Alpha Globulin,Alpha Globulins
D012709 Serum Albumin A major protein in the BLOOD. It is important in maintaining the colloidal osmotic pressure and transporting large organic molecules. Plasma Albumin,Albumin, Serum
D013975 Thyroxine-Binding Proteins Blood proteins that bind to THYROID HORMONES such as THYROXINE and transport them throughout the circulatory system. Thyroxine Transport Protein,Thyroxine-Binding Protein,Thyroxine Binding Protein,Thyroxine Binding Proteins
D014284 Triiodothyronine A T3 thyroid hormone normally synthesized and secreted by the thyroid gland in much smaller quantities than thyroxine (T4). Most T3 is derived from peripheral monodeiodination of T4 at the 5' position of the outer ring of the iodothyronine nucleus. The hormone finally delivered and used by the tissues is mainly T3. Liothyronine,T3 Thyroid Hormone,3,3',5-Triiodothyronine,Cytomel,Liothyronine Sodium,Thyroid Hormone, T3
D014285 Triiodothyronine, Reverse A metabolite of THYROXINE, formed by the peripheral enzymatic monodeiodination of T4 at the 5 position of the inner ring of the iodothyronine nucleus. 3,3',5'-Triiodothyronine,Reverse T3 Thyroid hormone,Reverse Triiodothyronine,3,3,5 Triiodothyronine,3,3,5-Triiodothyronine

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