CD21 Antibody

SKU: orb606689

Description

Recognizes a protein of 140kDa, which is identified as the complement receptor 2 (CR2)/CD21. Its epitope is located in 5-8 short consensus repeats (SCRs). This mAb is highly specific to CR2 and shows no cross-reaction with CR1. This protein is expressed strongly on mature B cells, follicular dendritic cells and weakly on immature thymocytes and T lymphocytes. In B-cell ontogeny, CD21 appears after the pre-B-stage, is maintained during peripheral B-cell development and is lost upon terminal differentiation into plasma cells. CD21 expression is also gradually lost after stimulation of B cells in vitro. 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.

Research Area

Product Categories/Products/Antibodies,Product Categories/Research Area,Product Categories/Products/Antibodies/Primary Antibodies,Immunology,Epigenetics,Infectious Diseases

Images & Validation

• Tested Applications: ELISA, FACS, IF, IHC-P, WB
• Dilution Range: ELISA (order BSA/sodium azide-free format for coating),Flow cytometry: 1-2ug/million cells,Western blot: 1-2ug/ml,Immunofluorescence: 1-2ug/ml,Immunohistochemistry (FFPE): 1-2ug/ml for 30 min at RT
• Reactivity: Human
• Application Notes:
  Optimal dilution of the CD21 antibody should be determined by the researcher.1. The prediluted format is supplied in a dropper bottle and is optimized for use in IHC. After epitope retrieval step (if required), drip mAb solution onto the tissue section and incubate at RT for 30 min.

Key Properties

• Antibody Type: Primary Antibody
• Host: Mouse
• Clonality: Monoclonal
• Isotype: Mouse IgG1, kappa
• Clone No.: CR2/2754
• Immunogen: A portion of amino acids 142-240 from the human protein was used as the immunogen for the CD21 antibody.
• Purity: Protein G affinity chromatography
• Conjugation: Unconjugated

Storage & Handling

• Storage: Store the CD21 antibody at 2-8°C (with azide) or aliquot and store at -20°C or colder (without azide).
• Buffer/Preservatives: 0.2 mg/ml in 1X PBS with 0.1 mg/ml rAlbumin (US sourced) and 0.05% sodium azide
• Expiration Date: 12 months from date of receipt.
• Hazard Information: This CD21 antibody is available for research use only.
• Disclaimer: For research use only

Quick Database Links

UniProt

P20023