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Invitrogen
CD21 Monoclonal Antibody (HB5), FITC, eBioscience™
FIGURE: 1 / 3
CD21 Antibody (11-0219-42) in Flow
Staining of normal human peripheral blood cells with Anti-Human CD3 eFluor® 450 (Product # 48-0038-80) and Mouse IgG2a K Isotype Control FITC (Product # 11-4724-42) (left) or Anti-Human CD21 FITC (right). Cells in the lymphocyte gate were used for analysis.
Product Details
11-0219-42
Applications
Tested Dilution
Publications
Product Specifications
Species Reactivity
Human
Published species
Human
Host/Isotype
Mouse
/ IgG2a, kappa
Recommended Isotype Control
Class
Monoclonal
Type
Antibody
Clone
HB5
Conjugate
Excitation/Emission Max
498/517 nm
View spectra
Form
Liquid
Concentration
5 µL/Test
Purification
Affinity chromatography
Storage buffer
PBS, pH 7.2, with 0.2% BSA
Contains
0.09% sodium azide
Storage conditions
4° C, store in dark, DO NOT FREEZE!
Shipping conditions
Ambient (domestic); Wet ice (international)
RRID
AB_2572442
Product Specific Information
Description: The HB5 monoclonal antibody reacts with human CD21, an approximately 145 kDa type I transmembrane protein. CD21 is expressed by mature B cells, folliculate dendritic cells and a subset of epithelial cells and is a receptor for complement component C3d and Epstein-Barr virus (EBV). CD21, in association with CD19 and CD81, participates in the multimolecular complex with BCR and is involved in B cell activation.
Applications Reported: This HB5 antibody has been reported for use in flow cytometric analysis.
Applications Tested: This HB5 antibody has been pre-titrated and tested by flow cytometric analysis of normal human peripheral blood cells. This can be used at 5 µL (0.125 µg) per test. A test is defined as the amount (µg) of antibody that will stain a cell sample in a final volume of 100 µL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test.
Excitation: 488 nm; Emission: 520 nm; Laser: Blue Laser.
Filtration: 0.2 µm post-manufacturing filtered.
Target Information
CD21 (complement receptor 2, CR2, C3D receptor, EBV receptor) binds C3 complement fragments, especially its breakdown fragments, which remain covalently attached to complement activating surfaces or antigen. CD21 has important roles in uptake and retention of immunocomplexes, survival of memory B cells and in development and maintenance of the humoral response to T-dependent antigens. CD21 also serves as a key receptor for Epstein-Barr virus binding and is involved in targeting prions to follicular dendritic cells and expediting neuroinvasion following peripheral exposure to prions. A soluble form of the CD21 (sCD21) is shed from the lymphocyte surface and retains its ability to bind respective ligands. CD21 functions as receptor for C3d, C3dg and iC3b complement components, for EBV and for IFNalpha. CD21 binds to CD23 and associates with CD19, CD81 and Leu13 to form a large signal-transduction complex involved in B cell activation. Genetic variations in the CD21 gene are associated with susceptibility to systemic lupus erythematosus type 9 (SLEB9). Alternatively, spliced transcript variants encoding different isoforms of CD21 have been found.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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Bioinformatics
Protein Aliases: CD21; Complement C3d receptor; Complement C3d receptor (C3DR); complement component (3d/Epstein Barr virus) receptor 2; Complement receptor type 2; Complement Receptor type 2 (CR2); Cr2; EBV receptor; EBV-R; Epstein-Barr virus receptor; EVBR
Gene Aliases: C3DR; CD21; CR; CR2; CVID7; SLEB9
UniProt ID: (Human) P20023
Entrez Gene ID: (Human) 1380
Performance Guarantee
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