- Clone
- WM53 (See other available formats)
- Workshop
- IV M-505
- Other Names
- Siglec-3, gp67, p67
- Isotype
- Mouse IgG1, κ
- Ave. Rating
- Submit a Review
- Product Citations
- publications

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Human peripheral blood monocytes were stained with human CD33 (clone WM53) Alexa Fluor® 700 (filled histogram) or mouse IgG1,κ Alexa Fluor® 700 isotype control (open histogram).
Cat # | Size | Price | Quantity Avail. | Save | ||
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303435 | 25 tests | 224€ | ||||
303436 | 100 tests | 496€ |
CD33 is a 67 kD type I transmembrane glycoprotein also known as Siglec-3, gp67, and p67. It is a sialoadhesion immunoglobulin superfamily member expressed on myeloid progenitors, monocytes, granulocytes, dendritic cells and mast cells. CD33 is absent on normal platelets, lymphocytes, erythrocytes and hematopoietic stem cells. CD33 functions as a sialic acid-dependent cell adhesion molecule with carbohydrate/lectin binding activity.
Product DetailsProduct Details
- Reactivity
- Human, Chimpanzee
- Antibody Type
- Monoclonal
- Host Species
- Mouse
- Immunogen
- Human myeloid leukaemia cells.
- Formulation
- Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide and 0.2% (w/v) BSA (origin USA).
- Preparation
- The antibody was purified by affinity chromatography and conjugated with Alexa Fluor® 700 under optimal conditions.
- Concentration
- Lot-specific (please contact technical support for concentration and total µg amount, or use our Lookup tool if you have a lot number.)
- Storage & Handling
- The antibody was purified by affinity chromatography and conjugated with Alexa Fluor® 700 under optimal conditions. The solution is free of unconjugated Alexa Fluor® 700.
- Application
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FC - Quality tested
- Recommended Usage
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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® 700 has a maximum emission of 719 nm when it is excited at 633 nm / 635 nm. Prior to using Alexa Fluor® 700 conjugate for flow cytometric analysis, please verify your flow cytometer's capability of exciting and detecting the fluorochrome.
Alexa Fluor® and Pacific Blue™ are trademarks of Life Technologies Corporation.
View full statement regarding label licenses - Excitation Laser
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Red Laser (633 nm)
- Application Notes
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Additional reported applications (for the relevant formats) include: immunoprecipitation, Westrn blotting3, induction of cytokine production3, and immunofluorescence4. The Ultra-LEAF™ purified antibody (Endotoxin < 0.01 EU/µg, Azide-Free, 0.2 µm filtered) is recommended for functional assays (Cat. Nos. 303437 & 303438).
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Application References
(PubMed link indicates BioLegend citation) -
- Knapp W, et al. 1989. Leucocyte Typing IV. Oxford University Press. New York.
- Favaloro E, et al. 1988. Br. J. Haematol. 69:163.
- Garnache-Ottou F, et al. 2005. Blood 105:1256. (WB)
- Pèrez-Oliva AB, et al. 2011. Glycobiology. 21:757. (epitope, FC, IF)
- RRID
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AB_2810437 (BioLegend Cat. No. 303435)
AB_2810438 (BioLegend Cat. No. 303436)
Antigen Details
- Structure
- Ig superfamily, sialoadhesins, type I glycoprotein, 67 kD
- Distribution
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Myeloid progenitor, monocytes, granulocytes, dendritic cells, mast cells
- Function
- Adhesion and lectin activity
- Ligand/Receptor
- Sugar chains containing sialic acid
- Cell Type
- B cells, Dendritic cells, Granulocytes, Hematopoietic stem and progenitors, Mast cells, Monocytes, Neutrophils
- Biology Area
- Cell Biology, Immunology, Neuroinflammation, Neuroscience
- Molecular Family
- CD Molecules, Siglec Molecules
- Antigen References
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1. Favaloro E, et al. 1988. Br. J. Haematol. 69:163.
2. Freeman S, et al. 1995. Blood 85:2005. - Gene ID
- 945 View all products for this Gene ID
- UniProt
- View information about CD33 on UniProt.org
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