Anti-CD4 antibody [MEM-241] (ab1089)


  • Product nameAnti-CD4 antibody [MEM-241]
    See all CD4 primary antibodies
  • Description
    Mouse monoclonal [MEM-241] to CD4
  • SpecificityThis antibody is specific for CD4.
  • Tested applicationsSuitable for: Flow Cyt, WBmore details
  • Species reactivity
    Reacts with: Human
  • Immunogen

    Fusion protein (Human).



Our Abpromise guarantee covers the use of ab1089 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
Flow Cyt
  • Application notesFlow Cyt: Use at an assay dependant concentration.
    WB: Use at an assay dependant concentration. Use under non-reducing conditions.

    Not tested in other applications.
    Optimal dilutions/concentrations should be determined by the end user.
  • Target

    • FunctionAccessory protein for MHC class-II antigen/T-cell receptor interaction. May regulate T-cell activation. Induces the aggregation of lipid rafts.
    • Sequence similaritiesContains 3 Ig-like C2-type (immunoglobulin-like) domains.
      Contains 1 Ig-like V-type (immunoglobulin-like) domain.
    • Post-translational
      Palmitoylation and association with LCK contribute to the enrichment of CD4 in lipid rafts.
    • Cellular localizationCell membrane. Localizes to lipid rafts. Removed from plasma membrane by HIV-1 Nef protein that increases clathrin-dependent endocytosis of this antigen to target it to lysosomal degradation. Cell surface expression is also down-modulated by HIV-1 Envelope polyprotein gp160 that interacts with, and sequesters CD4 in the endoplasmic reticulum.
    • Information by UniProt
    • Database links
    • Alternative names
      • CD 4 antibody
      • CD4 (L3T4) antibody
      • CD4 antibody
      • CD4 antigen (p55) antibody
      • CD4 antigen antibody
      • CD4 molecule antibody
      • CD4 receptor antibody
      • CD4+ Lymphocyte deficiency, included antibody
      • CD4_HUMAN antibody
      • CD4mut antibody
      • L3T4 antibody
      • Leu3 antibody
      • Ly-4 antibody
      • Lymphocyte antigen CD4 antibody
      • MGC165891 antibody
      • OTTHUMP00000238897 antibody
      • p55 antibody
      • T cell antigen T4 antibody
      • T cell antigen T4/LEU3 antibody
      • T cell differentiation antigen L3T4 antibody
      • T cell OKT4 deficiency, included antibody
      • T cell surface antigen T4/Leu 3 antibody
      • T cell surface antigen T4/Leu3 antibody
      • T cell surface glycoprotein CD4 antibody
      • T-cell surface antigen T4/Leu-3 antibody
      • T-cell surface glycoprotein CD4 antibody
      • W3/25 antibody
      • W3/25 antigen antibody
      see all

    Anti-CD4 antibody [MEM-241] images

    • Fresh buffy coats isolated from T-cells were solubilized in lauryl maltoside lysis buffer and the lysate was subjected to affinity chromatography both on an immunosorbent made of immobilized ab8088 (anti-CD4) or irrelevant negative control immunosorbent. Lanes: 1. original lysate, 2. the material eluted from irrelevant immunosorbent (negative control), 3. the material eluted from ab8088 (anti-CD4)-sepharose.

    References for Anti-CD4 antibody [MEM-241] (ab1089)

    ab1089 has not yet been referenced specifically in any publications.

    Product Wall

    Thank you for your enquiry. I am sorry to hear that your customer has been having difficulties with this antibody. I have read your customer's technical questionnaire in conjunction with the protocol that you have provided. The blot image that ...

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    Thank you for contacting us and taking the time to fill in the questionnaire, I'm sorry to hear you are experiencing a problem with ab1089 in western blotting of CD4 recombinant protein. I think the problem you are experiencing is due to the fact y...

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    Thank you for your enquiry and for your patience. Looking through the datasheets for the CD4 antibodies that would appear to most appropriate for you (those that have been tested in FACS and cross-react with human), I was able to come up with the follo...

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    Thank you again for your patience. Regarding ab8361 and ab8476, the epitopes have not yet been determined. If you have any more questions, please contact us again.

    Thank you for your enquiry. For ab1089, we don't have information regarding the epitope at this time. For ab1155, please refer to the following references for more information: 1) Proceeding of the Second International Workshop and Conference on human ...

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    Epitope mapping has not been conducted with this antibody.

    For the batch, dilution 1:200 gave us very strong signal with HPB T cell line with some backgroung developed, I think 1:500 or even 1:1000 would be better. It depends on your assay system and reagents used. The WB on the image was done with culture ...

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