RBP4/Retinol-Binding Protein 4 Antibody (423619) [Alexa Fluor™ Plus 405]

• Clone: 423619
• Clonality: Monoclonal
• Host: Rat
• Conjugate: Alexa Fluor Plus 405

RBP4/Retinol-Binding Protein 4 Antibody (423619) [Alexa Fluor™ Plus 405] Summary

• Immunogen: Mouse myeloma cell line NS0-derived recombinant mouse RBP4/Retinol‑Binding Protein 4
  Met1-Leu201
  Accession # NP_035385
• Specificity: Detects mouse RBP4/Retinol‑Binding Protein 4 in direct ELISA and Western Blot. In Western blots, detects human RBP4/Retinol‑Binding Protein 4.
• Source: N/A
• Isotype: IgG2a
• Clonality: Monoclonal
• Host: Rat
• Purity Statement: Protein A or G purified

Packaging, Storage & Formulations

• Storage: Protect from light. Do not freeze. 12 months from date of receipt, 2 to 8 °C as supplied
• Buffer: Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.

Notes

This product is provided under an intellectual property license from Life Technologies Corporation. The transfer of this product is conditioned on the buyer using the purchased product solely in research conducted by the buyer, excluding contract research or any fee for service research, and the buyer must not (1) use this product or its components for (a) diagnostic, therapeutic or prophylactic purposes; (b) testing, analysis or screening services, or information in return for compensation on a per-test basis; or (c) manufacturing or quality assurance or quality control, and/or (2) sell or transfer this product or its components for resale, whether or not resold for use in research. For information on purchasing a license to this product for purposes other than as described above, contact Life Technologies Corporation, 5781 Van Allen Way, Carlsbad, CA 92008 USA or outlicensing@thermofisher.com.

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Background

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. The amino acid sequence of mouse RBP4 is 99%, 86%, 83% and 75% identical to that of rat, human/chimpanzee, dog and chicken.

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.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.