Thermo Fisher Scientific CD21 Monoclonal Antibody (HB5), NovaFluor Red 755, eBioscience

Applications

Tested Dilution

Publications

Flow Cytometry (Flow)

5 µL (0.05 µg)/test

-

Product Specifications

Species Reactivity

Human

Host/Isotype

Mouse / IgG2a, kappa

Class

Monoclonal

Type

Antibody

Clone

HB5

Conjugate

NovaFluor™ Red 755 NovaFluor™ Red 755 NovaFluor™ Red 755

View additional formats

• APC
• FITC
• NovaFluor Blue 610-70S
• NovaFluor Blue 660-120S
• NovaFluor Red 710
• NovaFluor Red 725
• NovaFluor Yellow 610
• NovaFluor Yellow 660
• PE
• PE-Cyanine7
• PerCP-eFluor 710
• Super Bright 436
• Super Bright 600
• Request custom conjugation

Excitation/Emission Max

636/755 nm View spectra

Form

Liquid

Concentration

0.05 µg/Test

Purification

Affinity chromatography

Storage buffer

PBS, pH 7.2

Contains

0.09% sodium azide

Storage conditions

4° C, store in dark, DO NOT FREEZE!

RRID

AB_3098646 (AB_2930994)

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.

Each product contains 1 vial of NovaFluor conjugate and 1 vial of CellBlox Plus Blocking Buffer .

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 (0.05 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.

NovaFluor dyes are not compatible with DNA intercalating viability dyes. Do not use viability dyes such as propidium iodide, 7-actinomycin D (7-AAD) and DAPI. Invitrogen LIVE/DEAD Fixable Dead Cell stains are recommended for use with NovaFluor dyes.

This NovaFluor conjugate has been updated to ship with CellBlox Plus Blocking Buffer (Cat. No. (C001T06F01)). This buffer contains formulation improvements over CellBlox. CellBlox Plus Blocking Buffer is required for optimal staining with NovaFluor conjugates and should be used in all experiments where NovaFluor conjugates are used. Whenever possible, we recommend adding CellBlox Plus Blocking Buffer to antibody cocktails/master mixes prior to combining with cells. Add 5 µL per sample (regardless of the number of NovaFluors in your panel) to use the antibody cocktail as intended. For single-color controls, use 5 µL of CellBlox Blocking Buffer per 100 µL of cell sample containing 10^3 to 10^8 cells.

NovaFluor conjugates are based on Phiton™ technology utilizing novel nucleic acid dye structures that allow for engineered fluorescent signatures with consideration for spillover and spread impacts. Learn more

Excitation: 636 nm; Emission: 756 nm; Laser: 633-640 nm (Red) Laser

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.