Human FCRL2/FcRH2 Antibody Summary
Accession # Q96LA5
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Detection of FCRL2/FcRH2 in Human B Cells by Flow Cytometry.
Human whole blood CD19 + B cells were stained with Goat Anti-Human FCRL2/FcRH2 Antigen Affinity‑purified Polyclonal Antibody (Catalog # AF2048) followed by Allophycocyanin-conjugated Anti-Goat IgG Secondary Antibody (Catalog # F0108) and Human CD19 Phycoerythrin-conjugated Monoclonal Antibody (Catalog # FAB4867P). Quadrant markers were set based on control antibody staining (Catalog #
Preparation and Storage
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Fc receptor-like 2 (FCRL2), also known as FcRH2 and IRTA4, belongs to the family of glycoprotein homologs of classical immunoglobulin (Ig) Fc receptors. In human, the type I transmembrane FCRL protein family contains from three to nine immunoglobulin-like domains (1, 2). Mature human FcRH2 consists of a 382 amino acid (aa) extracellular domain (ECD) with four Ig-like C2-set domains, a 21 aa transmembrane segment, and an 86 aa cytoplasmic domain with one ITAM-like, and two ITIM-like motifs (3‑5). Alternate splicing of human FCRL2 may generate isoforms with N-terminal, internal, or C-terminal deletions (4, 5). The gene for FcRH2 maps to the human Iq21-23 locus which is a hotspot for chromosomal translocation events associated with B cell malignancies (3, 6). Although there are several Fc receptor‑like genes in the mouse, none of these is a clear ortholog to human FCRL2 (7). FCRL proteins are differentially expressed among B cells (2). FCRL2 is preferentially expressed on naïve and CD27+ memory B cells within the spleen, lymph nodes, tonsils, and peripheral blood (3, 4, 8, 9). It is also expressed on most B cells in B cell chronic lymphocytic leukemia (B‑CLL) patients (10). FCRL2 up‑regulation is associated with mutation of the immunoglobulin heavy chain variable (IGHV) and less aggressive forms of B-CLL (9, 11).
- Maltais, L.J. et al. (2006) Nat. Immunol. 7:431.
- Davis, R.S. et al. (2007) Annu. Rev. Immunol. 25:525.
- Miller, I. et al. (2002) Blood 99:2662.
- Davis, R.S. et al. (2001) Proc. Natl. Acad. Sci. 98:9772.
- Xu, M.J. et al. (2001) Biochem. Biophys. Res. Commun. 280:768.
- Hatzivassiliou, G. et al. (2001) Immunity 14:277.
- Davis, R.S. et al. (2004) Int. Immunol. 16:1343.
- Polson, A.G. et al. (2006) Int. Immunol. 18:1363.
- Huttmann, A. et al. (2006) Leukemia 20:1774.
- Kazemi, T. et al. (2008) Int. J. Cancer 123:2113.
- Li, F.J. et al. (2008) Blood 112:179.
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