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Retinol Binding Protein (RBP4), Human Urine

An important transporter of retinol in the bloodstream
Catalog #: P1723

Product Details

Cat # +Size P1723-1000
Size 1 mg
Alternate Name Retinol binding protein 4; plasma retinol-binding protein; MCOPCB10; RDCCAS; PRBP; RBP
Gene ID 5950
Accession # P02753
Source Human urine from patients with chronic renal tubular proteinuria
Appearance Lyophilized protein
Physical Form Description Lyophilized powder
Molecular Weight 21 kDa
Purity by SDS-PAGE ≥ 98%
Reconstitution Instructions Reconstitute using phosphate buffer with 0.15 M NaCl, pH > 7.0
Handling Centrifuge the vial prior to opening.
Storage Conditions 4.0 °C
Shipping Conditions Gel Pack
USAGE For Research Use Only! Not For Use in Humans.


Retinol binding protein (RBP4) is the specific carrier for retinol (vitamin A) in the blood. RBP4 delivers retinol from the liver to peripheral tissues. In plasma, RBP4 complexed with retinol interacts with transthyretin which prevents its loss by filtration through kidney glomeruli. RBP4 then transfers the retinol to other factors to facilitate retinol transport across the cell membrane.

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