Recombinant Anti-RBP4 antibody [EP3657] - BSA and Azide free (ab239950)


  • Product name

    Anti-RBP4 antibody [EP3657] - BSA and Azide free
    See all RBP4 primary antibodies
  • Description

    Rabbit monoclonal [EP3657] to RBP4 - BSA and Azide free
  • Host species

  • Tested applications

    Suitable for: ICC/IF, WBmore details
    Unsuitable for: IHC-P
  • Species reactivity

    Reacts with: Mouse, Rat, Human
  • Immunogen

    Synthetic peptide within Human RBP4 aa 100-200. The exact sequence is proprietary.

  • General notes

    Ab239950 is the carrier-free version of ab109193. This format is designed for use in antibody labeling, including fluorochromes, metal isotopes, oligonucleotides, enzymes.


    Our carrier-free formats are supplied in a buffer free of BSA, sodium azide and glycerol for higher conjugation efficiency.

    Use our conjugation kits  for antibody conjugates that are ready-to-use in as little as 20 minutes with <1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.

    ab239950 is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm.

    Maxpar® is a trademark of Fluidigm Canada Inc.

    Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMab® patents.

    This product is a recombinant rabbit monoclonal antibody.



Our Abpromise guarantee covers the use of ab239950 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
ICC/IF Use at an assay dependent concentration.
WB Use at an assay dependent concentration. Detects a band of approximately 23 kDa (predicted molecular weight: 23 kDa).
  • Application notes
    Is unsuitable for IHC-P.
  • Target

    • Function

      Delivers retinol from the liver stores to the peripheral tissues. In plasma, the RBP-retinol complex interacts with transthyretin, this prevents its loss by filtration through the kidney glomeruli.
    • Involvement in disease

      Defects in RBP4 are a cause of retinol-binding protein deficiency (RBP deficiency) [MIM:180250]. This condition causes night vision problems. It produces a typical 'fundus xerophthalmicus', featuring a progressed atrophy of the retinal pigment epithelium.
    • Sequence similarities

      Belongs to the calycin superfamily. Lipocalin family.
    • Cellular localization

    • Information by UniProt
    • Database links

    • Alternative names

      • OTTHUMP00000020114 antibody
      • OTTHUMP00000020115 antibody
      • OTTHUMP00000020116 antibody
      • Plasma retinol binding protein 4 antibody
      • Plasma retinol-binding protein antibody
      • Plasma retinol-binding protein(1-176) antibody
      • PRBP antibody
      • PRO2222 antibody
      • RBP antibody
      • RBP4 antibody
      • RDCCAS antibody
      • RET4_HUMAN antibody
      • Retinol binding protein 4 antibody
      • Retinol binding protein 4 interstitial antibody
      • Retinol binding protein 4 plasma antibody
      see all


    • Immunocytochemistry/immunofluorescence staining of 100% methanol fixed; 0.1% triton X 100 permeabilized HeLa (human cervix adenocarcinoma) cells with purified ab109193 at dilution of 1/100. The secondary antibody used was Alexa Fluor® 488; goat anti-rabbit IgG (ab150077) at a dilution of 1/1000. Nucleus was counter-stained with DAPI (blue). ab7291, a mouse anti-tubulin antibody (1/1000) was used to stain tubulin along with ab150120 (AlexaFluor®594 goat anti-mouse secondary, 1/1000) shown in the top right hand panel. The negative controls are shown in the bottom middle and right hand panels- for negative control 1 rabbit primary antibody and anti-mouse secondary antibody (ab150120) was used. For negative control 2 mouse primary antibody (ab7291) and anti-rabbit secondary antibody (ab150077) was used.

      This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab109193).

    • Immunofluorescent analysis of HeLa cells labelling RBP4 with un-purified ab109193 at a dilution of 1/100.

      This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab109193).


    ab239950 has not yet been referenced specifically in any publications.

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