Mouse RBP4/Retinol-Binding Protein 4 Antibody

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Detection of Mouse RBP4/Retinol‑Binding Protein 4 by Western Blot.
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Mouse RBP4/Retinol-Binding Protein 4 Antibody Summary

Species Reactivity
Detects mouse RBP4 in direct ELISAs and Western blots. In these formats, approximately 10% cross‑reactivity with recombinant human RBP4 is observed.
Polyclonal Sheep IgG
Antigen Affinity-purified
Mouse myeloma cell line NS0-derived recombinant mouse RBP4 (R&D Systems, Catalog # 3476-LC)
Accession # Q00724
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.


Recommended Concentration
Western Blot
0.2 µg/mL
See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Western Blot Detection of Mouse RBP4/Retinol-Binding Protein 4 antibody by Western Blot. View Larger

Detection of Mouse RBP4/Retinol‑Binding Protein 4 by Western Blot. Western blot shows lysate of Hepa 1-6 mouse hepatoma cell line. PVDF membrane was probed with 0.2 µg/mL of Sheep Anti-Mouse RBP4/Retinol-Binding Protein 4 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF3476) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for RBP4/Retinol-Binding Protein 4 at approximately 22 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: RBP4/Retinol-Binding Protein 4

Retinol (also known as vitamin A) is unstable and insoluble in the aqueous solution. However, retinol becomes quite stable and soluble in plasma due to its tight interaction with retinol-binding protein 4 (RBP4), also known as plasma retinol-binding protein (1 - 3). A prototypic member of the lipocalin superfamily, RBP4 has a beta ‑barrel structure with a well-defined cavity. It is secreted from the liver, a process requiring the availability of retinol. RBP4 delivers retinol from the liver to the peripheral tissues. In plasma, the RBP4-retinol complex interacts with transthyretin (TTR), also known as thyroxine-binding protein and prealbumin. The retinol-RBP4-TTR complex prevents the loss of RBP4 by filtration through the kidney and increases the stability of the retinol-RBP4 complex. Defects in RBP4 cause retinol-binding protein deficiency, which affects night vision. Serum RBP4 levels are elevated in insulin-resistant mice and humans with obesity and type 2 diabetes, implying that RBP4, an adipocyte-derived signal, may be a biomarker and a drug target for the two diseases.

  1. Zanotti, G. and R. Berni (2004) Vitamins and Hormones 69:271.
  2. Newcomer, M.E. and D.E. Ong (2000) Biochim. Biophys. Acta 1482:57.
  3. Yang, Q. et al. (2005) Nature 436:356.
Entrez Gene IDs
5950 (Human); 19662 (Mouse); 25703 (Rat)
Alternate Names
interstitial; Plasma retinol-binding protein; RBP4; retinol binding protein 4, plasma; RetinolBinding Protein 4; retinol-binding protein 4, plasma

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