The Binding Stoichiometry of Human Plasma Retinol-binding Protein to Prealbumin
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چکیده
منابع مشابه
The binding stoichiometry of human plasma retinol-binding protein to prealbumin.
The stoichiometry of binding between all-trans-retinolretinol-binding protein (RRP) and prealbumin was investigated by means of gel filtration chromatography, electrophoresis, absorption, and circular dichroism. Using protein concentrations of up to 2.0 mg per ml, it was found that under a variety of experimental conditions 1 prealbumin molecule binds 1 to 1.35 molecules of retinal-RRP at pH 7....
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The interaction of human plasma retinol-binding protein with plasma prealbumin was studied by the techniques of velocity ultracentrifugation and polarization of retinol fluorescence. In the first method the unbound fraction of retinol-binding protein, which sediments more slowly than its complexes with prealbumin, was measured by its absorption. A stoichiometry of retinol-binding protein to pre...
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Prealbumin was isolated from human plasma by chromatography on columns of diethylaminoethyl Sephadex and Sephadex G-200, followed by preparative polyacrylamide gel electrophoresis. The prealbumin was homogeneous in the analytical ultracentrifuge with an s=z~,~ of 3.7 S and with a molecular weight of about 50,000. Prealbumin formed a protein-protein complex with plasma retinol-binding protein in...
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In hemodialysis (HD) patients, serum prealbumin (TBPA) is correlated to nutritional status and outcome despite usually elevated serum levels. The purpose of this work was to study the role of TBPA-retinol-binding-protein (RBP)-retinol complex changes in the elevation of serum TBPA in HD patients. Serum TBPA, RBP, and retinol were measured in 30 otherwise healthy HD patients (15 men, 15 women) a...
متن کاملRadioimmunoassay of human plasma retinol-binding protein.
A radioimmunoassay for human plasma retinol-binding protein (RBP) has been developed utilizing a double antibody precipitation technique. RBP was purified 1500- to 2000-fold by procedures described previously. A specific anti-human RBP antiserum was prepared in rabbits by three once-weekly injections of purified RBP emulsified with Freund's adjuvant. RBP was iodinated with (131)I and the RBP-(1...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1974
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(20)79908-4