Thermo Fisher Scientific CD21 Monoclonal Antibody (LT21)

Applications

Tested Dilution

Publications

Immunohistochemistry (Frozen) (IHC (F))

Assay-dependent

-

Flow Cytometry (Flow)

2 µg/mL

-

Product Specifications

Species Reactivity

Bovine, Dog, Human, Pig

Host/Isotype

Mouse / IgG1

Class

Monoclonal

Type

Antibody

Clone

LT21

Immunogen

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Conjugate

Unconjugated Unconjugated Unconjugated

View additional formats

• Alexa Fluor 647
• FITC
• PE
• Request custom conjugation

Form

Liquid

Concentration

1 mg/mL

Purification

Protein A

Storage buffer

PBS, pH 7.4

Contains

15mM sodium azide

Storage conditions

4° C, do not freeze

Shipping conditions

Ambient (domestic); Wet ice (international)

RRID

AB_1071627

Product Specific Information

This antibody reacts with an extracellular epitope of CD21 (CR2), a 145 kDa transmembrane glycoprotein (complement C3d receptor - C3dR) expressed on B lymphocytes, follicular dendritic cells, some epithelial cells and a subsets of T lymphocytes. It is not expressed on immature B cells.

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.