FITC anti-human CD46 Antibody

Pricing & Availability
MEM-258 (See other available formats)
Regulatory Status
Other Names
Complement membrane cofactor protein, measles virus receptor, MCP
Mouse IgG1, κ
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Product Citations
Human peripheral blood lymphocytes stained with MEM-258 FITC
  • MEM-258_FITC_062707
    Human peripheral blood lymphocytes stained with MEM-258 FITC
See FITC spectral data
Cat # Size Price Save
315304 100 tests ¥45,150

CD46 is a transmembrane protein also known as complement membrane cofactor protein, MCP, and measles virus receptor. It is widely expressed on leukocytes, platelets, epithelial cells and fibroblasts. Multiple isoforms of CD46 have been reported with molecular weights ranging from 45-75 kD; CD46 binds complement components C3b and C4b and has also been reported to play a role in T cell regulation. In addition to the complement components, CD46 has been shown to interact with moesin, c-Src, tetraspanin 4, c-Yes, and integrin β1. CD46 is also known to be a cellular receptor for human measles virus and human herpes virus-6. Defects in CD46 have been associated with hemolytic-uremic syndrome. The MEM-258 antibody has been shown to be useful for flow cytometry, Western blotting, and immunoprecipitation.

Product Details
Technical data sheet

Product Details

Verified Reactivity
Antibody Type
Host Species
HPB-ALL T cell line
Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide and BSA (origin USA)
The antibody was purified by affinity chromatography, and conjugated with FITC under optimal conditions.
Lot-specific (to obtain lot-specific concentration, please enter the lot number in our Concentration and Expiration Lookup or Certificate of Analysis online tools.)
Storage & Handling
The antibody solution should be stored undiluted between 2°C and 8°C, and protected from prolonged exposure to light. Do not freeze.

FC - Quality tested

Recommended Usage

Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is 5 µl per million cells in 100 µl staining volume or 5 µl per 100 µl of whole blood.

Application Notes

Clone MEM-258 recognizes an epitope on the SCR4 (membrane-proximal SCR) domain of CD46. Additional reported applications (for the relevant formats) include: immunoprecipitation, Western blotting (non-reducing).

Application References

(PubMed link indicates BioLegend citation)
  1. Kishimoto T, et al. Eds. 1997. Leucocyte Typing VI. Garland Publishing Inc. London.
  2. Kickler K, et al. 2012. J immunol. 188:5303. PubMed
  3. Bach P, et al. 2013. Cancer Res. 73:865. PubMed
  4. Wu Y, et al. 2014. Am J Physiol Gastrointest Liver Physiol. 306:1056. PubMed
Product Citations
  1. Bach P, et al. 2013. Cancer Res. 73:865. PubMed
  2. Davies L, et al. 2016. Stem Cells Trans Med. 5: 1485 - 1495. PubMed
  3. Kickler K, et al. 2012. J Immunol. 188:5303. PubMed
  4. Tritschler H, et al. 2021. Cells. 10:. PubMed
  5. Ammour Y, et al. 2020. Viruses. 12:. PubMed
  6. Wu Y, et al. 2014. Am J Physiol Gastrointest Liver Physiol. 306:1056. PubMed
AB_2291290 (BioLegend Cat. No. 315304)

Antigen Details

Transmembrane receptor, contains 4 SUSHI domains, multiple isoforms exist ranging in molecular weight from 45-75 kD. The larger isoform 65-75 kD is not expressed on peripheral blood cells.
Widely expressed in leukocytes, platelets, epithelial cells and fibroblasts
Binds complement components C3B and C4B with cofactor activity for the I-dependent cleavage of these proteins. May also play a role in T cell regulation
Moesin, c-Src, complement component 3, complement component 4B, tetraspanin 4, c-Yes, integrin β1
C3B, C4B, Measles virus, human herpesvirus-6
Phosphorylation (Y368)
Cell Type
Leukocytes, Platelets, Epithelial cells, Fibroblasts
Biology Area
Cell Biology, Complement, Immunology, Neuroinflammation, Neuroscience
Molecular Family
Adhesion Molecules, CD Molecules
Antigen References

1. Dorig RE, et al. 1993. Cell 75:295.
2. Cui W, et al. 1993. J. Immunol. 151:4137.
3. Kemper C, et al. 2003. Nature 421:388.
4. Marie JC, et al. 2002. Nat. Immunol. 3:659.

Gene ID
4179 View all products for this Gene ID
View information about CD46 on

Related FAQs

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Go To Top Version: 1    Revision Date: 11/30/2012

For research use only. Not for diagnostic use. Not for resale. BioLegend will not be held responsible for patent infringement or other violations that may occur with the use of our products.


*These products may be covered by one or more Limited Use Label Licenses (see the BioLegend Catalog or our website, BioLegend products may not be transferred to third parties, resold, modified for resale, or used to manufacture commercial products, reverse engineer functionally similar materials, or to provide a service to third parties without written approval of BioLegend. By use of these products you accept the terms and conditions of all applicable Limited Use Label Licenses. Unless otherwise indicated, these products are for research use only and are not intended for human or animal diagnostic, therapeutic or commercial use.


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This data display is provided for general comparisons between formats.
Your actual data may vary due to variations in samples, target cells, instruments and their settings, staining conditions, and other factors.
If you need assistance with selecting the best format contact our expert technical support team.

  • FITC anti-human CD46


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