Recombinant Human FCRL3/FcRH3 Protein, CF

Newer Version Available: 3126-FCB
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Discontinued Product

3126-FC has been discontinued and is replaced by 3126-FCB.

R&D Systems Recombinant Proteins and Enzymes
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Citations (3)
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Reviews (2)

Recombinant Human FCRL3/FcRH3 Protein, CF Summary

Product Specifications

Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
Activity
Measured by its ability to bind human IgG with an estimated KD <60 nM.
Source
Mouse myeloma cell line, NS0-derived human FCRL3/FcRH3 protein
Arg14-Arg569, with a C-terminal 6-His tag
Accession #
N-terminal Sequence
Analysis
Arg14
Predicted Molecular Mass
62.2 kDa
SDS-PAGE
80-90 kDa, reducing conditions

Product Datasheets

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3126-FC

Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

3126-FC

Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & 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.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Reconstitution Calculator

Reconstitution Calculator

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Background: FCRL3/FcRH3

FCRL3 (Fc Receptor-Like 3), also known as FcRH3, IRTA3, and SPAP2, is a 110 kDa molecule with sequence homology to classical Fc receptors. The type 1 transmembrane FCRL proteins contain from three to nine immunoglobulin-like domains. They are differentially expressed within the B cell lineage and can either promote or inhibit B cell proliferation and activation (1). Mature human FCRL3 consists of a 556 amino acid (aa) extracellular domain (ECD) with six Ig-like domains, a 21 aa transmembrane segment, and a 140 aa cytoplasmic domain with four immunotyrosine inhibitory motifs (ITIMs) (2 - 4). Within the ECD, human and mouse FCRL3 share 35% aa sequence identity. Alternate splicing generates several additional isoforms with deletions or substitutions in both the extracellular and intracellular regions. These include potentially secreted forms that are truncated following the second Ig-like domain (4). FCRL3 is expressed in secondary lymphoid organs on the surface of mature naïve and memory B cells, NK cells, and B cell lines derived from chronic lymphocytic leukemias (2, 3, 5). It is upregulated on B cells following LPS or anti-CD40 stimulation (6). A polymorphism in the FCRL3 promoter induces enhanced transcription and is associated with the development of autoimmune disorders in a Japanese population (6, 7). Tyrosine phosphorylation within the ITIMs of FCRL3 enables its association with SHP-1 (4).

References
  1. Davis, R.S. (2007) Annu. Rev. Immunol. 25:525.
  2. Miller, I. et al. (2002) Blood, 99:2662.
  3. Davis, R.S. et al. (2001) Proc. Natl. Acad. Sci. 98:9772.
  4. Xu, M.-J. et al. (2002) Biochem. Biophys. Res. Commun. 293:1037.
  5. Polson, A.G. et al. (2006) Int. Immunol. 18:1363.
  6. Kochi, Y. et al. (2005) Nat. Genet. 37:478.
  7. Chistiakov, D.A. and A.P. Chistiakov (2007) Hum. Immunol. 68:375.
Long Name
Fc Receptor-like 3
Entrez Gene IDs
115352 (Human); 329693 (Mouse); 680697 (Rat)
Alternate Names
CD307c; Fc receptor homolog 3; Fc receptor-like 3; Fc receptor-like protein 3; FcRH3; FCRL3; fcR-like protein 3; hIFGP3; IFGP3; immunoglobulin superfamily receptor translocation associated protein 3; IRTA3; SPAP2

Citations for Recombinant Human FCRL3/FcRH3 Protein, CF

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

3 Citations: Showing 1 - 3
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  1. MAIA, Fc receptor-like 3, supersedes JUNO as IZUMO1 receptor during human fertilization
    Authors: J Vondrakova, M Frolikova, L Ded, J Cerny, P Postlerova, V Palenikova, O Simonik, Z Nahacka, K Basus, E Valaskova, R Machan, A Pacey, Z Holubcova, P Koubek, Z Ezrova, S Park, R Liu, R Partha, N Clark, J Neuzil, M Ikawa, K Erickson, KS Lam, H Moore, K Komrskova
    Science Advances, 2022-09-07;8(36):eabn0047.
    Species: Human
    Sample Types: Recombinant Protein
    Applications: Bioassay
  2. Human Fc Receptor-like 3 Inhibits Regulatory T Cell Function and Binds Secretory IgA
    Authors: S Agarwal, Z Kraus, J Dement-Bro, O Alabi, K Starost, M Tolnay
    Cell Rep, 2020-02-04;30(5):1292-1299.e3.
    Species: Human
    Sample Types: Protein, Recombinant Protein
    Applications: Surface Plasmon Resonance (SPR
  3. Human Fc receptor-like 5 binds intact IgG via mechanisms distinct from those of Fc receptors.
    Authors: Franco A, Damdinsuren B, Ise T, Dement-Brown J, Li H, Nagata S, Tolnay M
    J Immunol, 2013-04-24;190(11):5739-46.
    Species: Human
    Sample Types: Recombinant Proteins
    Applications: Surface Plasmon Resonance (SPR

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Reviews for Recombinant Human FCRL3/FcRH3 Protein, CF

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Recombinant Human FCRL3/FcRH3 Protein, CF
By Gerre Lafond on 02/19/2021
Application: Binding assay/Protein-protein interaction

Recombinant Human FCRL3/FcRH3 Protein, CF
By Alisha Freeman on 10/09/2020
Application: Enzymatic activity in vitro