Alexa Fluor® 488 anti-human CD51/61 Antibody

Pricing & Availability
23C6 (See other available formats)
Regulatory Status
V S246
Other Names
Vitronectin receptor, Integrin αV/β3, ITGAV, ITGB3
Mouse IgG1, κ
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Product Citations
Human melanoma cell line M21 stained with 23C6 Alexa Fluor® 488
  • 23C6_Alx488_071307
    Human melanoma cell line M21 stained with 23C6 Alexa Fluor® 488
Compare all formats See Alexa Fluor® 488 spectral data
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304408 100 tests 212€
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CD51/CD61 is an integrin complex known as αVβ3. It is expressed at high levels on osteoclasts, endothelial cells, and melanoma cells and at low levels on platelets and macrophages. CD51 is a heterodimer composed of disulfide-linked 125 kD and 24 kD proteins. CD61 is also a member of the integrin family known as gpIIIa or β3 integrin. It is a 110 kD common β subunit of CD51/CD61 or CD41/CD61 complex. CD51/CD61, also known as the vitronectin receptor, mediates the binding of platelets to immobilized vitronectin without prior activation. Other ligands include RGD-containing proteins such as fibrinogen, fibronectin, von Willebrand factor (vWf), laminin, thrombospondin and the neural adhesion molecule L1. CD51/CD61 also mediates cell-cell adhesion via interaction with CD31. CD51/CD61 acts as an activation-independent receptor for platelet attachment and spreading on vitronectin and other RGD-containing proteins, including matrix components. The 23C6 antibody has been reported to be useful for blocking studies.

Product Details
Technical Data Sheet (pdf)

Product Details

Verified Reactivity
Reported Reactivity
African Green, Chicken, Cynomolgus, Rabbit
Antibody Type
Host Species
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 Alexa Fluor® 488 under optimal conditions.
Lot-specific (to obtain lot-specific concentration and expiration, please enter the lot number in our Certificate of Analysis online tool.)
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.

* Alexa Fluor® 488 has a maximum emission of 519 nm when it is excited at 488 nm.

Alexa Fluor® and Pacific Blue™ are trademarks of Life Technologies Corporation.

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Excitation Laser
Blue Laser (488 nm)
Application Notes

Additional reported applications (for the relevant formats) include: immunoprecipitation5, immunohistochemical staining of acetone-fixed frozen tissue sections5, immunofluorescence microscopy5, and blocking of cell adhesion4,6. The LEAF™ Purified antibody (Endotoxin <0.1 EU/µg, Azide-Free, 0.2 µm filtered) is recommended for functional assays (Cat. No. 304414).

Application References

(PubMed link indicates BioLegend citation)
  1. Knapp WB, et al. 1989. Leucocyte Typing IV Oxford University Press. New York.
  2. Schlossman S, et al. Eds. 1995. Leucocyte Typing V. Oxford University Press. New York.
  3. Horton M, et al. 1991. Exp. Cell Res. 195:368.
  4. Takahashi R, et al. 1999. Blood 93:1951. (Block)
  5. Davies J, et al. 1989. J. Cell Biol. 109:1817. (IF, IHC, IP)
  6. Deregibus MC, et al. 2007. Blood doi:10.1182/blood-2007-03-078709. (FC, Block)
  7. Barau A, et al. 2010. J. Ultrasound Med. 29:173. PubMed
Product Citations
  1. Del Mistro G, et al. 2022. Cell Death Dis. 13:54. PubMed
AB_528843 (BioLegend Cat. No. 304408)

Antigen Details

Integrin, CD51/CD61 heterodimer, 24 kD

Platelets, B subset, activated T cells, monocytes/macrophages, osteoblasts, endothelial cells, melanoma

Adhesion, bone metabolism and apoptosis
Vitronectin, von Willebrand factor, fibrinogen, thrombospondin, osteopontin, denatured collagen
Cell Type
B cells, Endothelial cells, Macrophages, Monocytes, Osteoclasts, Platelets, T cells
Biology Area
Angiogenesis, Cell Adhesion, Cell Biology, Costimulatory Molecules, Immunology, Innate Immunity
Molecular Family
Adhesion Molecules, CD Molecules
Antigen References

1. Davies J, et al. 1989. J. Cell Biol. 109:1817.
2. Nesbitt S, et al. 1993. J. Biol. Chem. 268:16737.

Gene ID
3685 View all products for this Gene ID 3690 View all products for this Gene ID
View information about CD51 CD61 on

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Go To Top Version: 2    Revision Date: 06.27.2014

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*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 CD51/61

  • PE anti-human CD51/61

  • Purified anti-human CD51/61

  • Alexa Fluor® 488 anti-human CD51/61

  • Alexa Fluor® 647 anti-human CD51/61

  • Biotin anti-human CD51/61

  • APC anti-human CD51/61

  • Ultra-LEAF™ Purified anti-human CD51/61


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