FCRLA/FCRLM1 Antibody

Western blot shows lysates of Ramos human Burkitt's lymphoma cell line and Raji human Burkitt's lymphoma cell line. PVDF membrane was probed with 0.1 µg/mL of Sheep Anti-Human FCRLA Antigen Affinity-purified Polyclonal Antibody (Catalog # AF7965) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for FCRLA at approximately 44 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

• Reactivity: Hu
• Applications: WB
• Clonality: Polyclonal
• Host: Sheep
• Conjugate: Unconjugated
• Concentration: LYOPH

FCRLA/FCRLM1 Antibody Summary

• Immunogen: E. coli-derived recombinant human FCRLA
  Pro270-Glu359
  Accession # Q7L513
• Specificity: Detects human FCRLA in direct ELISAs and Western blots. In direct ELISAs, approximately 5-10% cross-reactivity with recombinant mouse FCRLA is observed.
• Source: N/A
• Isotype: IgG
• Clonality: Polyclonal
• Host: Sheep
• Gene: FCRLA
• Purity Statement: Antigen Affinity-purified

Applications/Dilutions

• Dilutions:
  • Western Blot 0.1 ug/mL

Packaging, Storage & Formulations

• Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 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.
• Buffer: Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
• Preservative: No Preservative
• Concentration: LYOPH
• Reconstitution Instructions: Sterile PBS to a final concentration of 0.2 mg/mL.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for FCRLA/FCRLM1 Antibody

• Fc receptor homolog expressed in B cells (FREB)
• Fc receptor homolog expressed in B-cells
• Fc receptor related protein X
• Fc receptor-like A
• Fc receptor-like and mucin-like 1
• Fc receptor-related protein X
• FCRL1
• FCRLA
• FCRLb
• FCRLc1
• FCRLc2
• FCRLd
• FCRLe
• FCRLFc receptor-like protein
• FCRLM1
• FCRLX
• FcRX
• FREB
• FREBFc receptor-like and mucin-like protein 1
• MGC4595

Background

FCRLA (Fc Receptor-Like A; also known as FcRX, FcRL1 and Fc receptor Homolog Expressed in B cells/FREB) is a 40-44 kDa intracellular member of the Fc gamma RI class, FcR family, Immunoglobulin Superfamily of molecules. Initially, it is associated with germinal center B cells that are undergoing somatic hypermutation and class-switch recombination. Now, it is believed that all B cells (but not CD38⁺ plasma cells) are also FCRLA⁺. FCRLA is suggested to act as an ER chaperone during antibody maturation, and is known to bind to IgM, IgA, and IgG prior to their secretion. Human FCRLA is synthesized as a 359 amino acid (aa) precursor that contains a 27 aa signal sequence plus a mature region that contains two C2-type Ig-like domains (aa 70-159 and 170-257), and a C-terminal poly-Proline region (aa 269-315). Although there is no traditional ER retention signal, a viable substitute is assumed to exist in the N-terminus of the mature molecule. FCLRA is believed to exist naturally as a monomer; however, disulfide-linkage can occur during experimental manipulation. At least eight potential isoform variants have been reported. It is unclear if, or how frequently they are expressed. One utilizes an alternative start site 17 aa upstream of the standard site, a second contains a six aa insertion after Ala28, and a third possessess an four aa substitution for aa 29-166. Five show single block deletions; in random order, they involve aa 78-166, 27-166, 78-261, 21‑261 and 167-26. Over aa 270-359, human FCLRA shares 55% aa sequence identity with mouse FCRLA.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Bioinformatics

• Gene Symbol: FCRLA
• Uniprot:
  • Q7L513()