Prealbumin II: Vitamin A(Retinol)-Binding Protein

  • Samuel Natelson
  • Ethan A. Natelson


Vitamin A circulates in the blood in the form of the alcohol called retinol. Retinol is found bound to prealbumin on electrophoresis.(1) It was soon shown that the retinol-binding protein (RBP) of prealbumin which held the retinol was tightly bound to thyroxine-binding prealbumin (TBPA) in a 1:1 molar ratio. This complex of RBP and TBPA is the retinol transport system.(2–4) Figure 12.1 is a schematic representation of this complex.


Cystic Fibrosis Celiac Disease Carotene Level Deep Yellow Color Retinol Deficiency 


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Selected Reading

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Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • Samuel Natelson
    • 1
  • Ethan A. Natelson
    • 2
  1. 1.Department of Environmental Practice, College of Veterinary MedicineUniversity of TennesseeKnoxvilleUSA
  2. 2.University of Texas Medical School and St. Joseph HospitalHoustonUSA

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