Recombinant Mouse Lgr4/GPR48 Fc Chimera Protein, CF

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Product Details

Summary
Reactivity MuSpecies Glossary
Applications Bioactivity
Format
Carrier-Free

Order Details

Recombinant Mouse Lgr4/GPR48 Fc Chimera Protein, CF Summary

Details of Functionality
Measured by its binding ability in a functional ELISA. When Recombinant Mouse R‑Spondin 3 (Catalog # 4120-RS) is coated at 0.5 μg/mL, Recombinant Mouse Lgr4/GPR48 Fc Chimera binds with an apparent Kd <2nM.
Source
Chinese Hamster Ovary cell line, CHO-derived mouse Lgr4/GPR48 protein
Mouse Lgr4/GPR48
(Gly20-Thr544)
Accession # A2ARI4
IEGRMDP Mouse IgG2A
(Glu98-Lys330)
N-terminus C-terminus
Accession #
N-terminal Sequence
Gly20 & Ala25
Structure / Form
Disulfide-linked homodimer
Protein/Peptide Type
Recombinant Proteins
Gene
Lgr4
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Theoretical MW
84.6 kDa (monomer).
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
SDS-PAGE
100-130 kDa, reducing conditions

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.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS.
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Reconstitution Instructions
Reconstitute at 400 μg/mL in PBS.

Notes

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

Alternate Names for Recombinant Mouse Lgr4/GPR48 Fc Chimera Protein, CF

  • GPR48
  • GPR48G protein-coupled receptor 48
  • G-protein coupled receptor 48
  • leucine-rich repeat containing G protein-coupled receptor 4
  • Lgr4

Background

Lgr4 (leucine-rich repeat G-protein coupled receptor 4), also called GPR48, is a seven-transmembrane glycoprotein receptor in the Lgr family of cell surface receptors (1, 2). While this family includes receptors for hormones such as LH, FSH, TSH, and HCG, the subfamily comprising Lgr4, Lgr5, and Lgr6 are G-protein independent mediators of the potentiating effect of R-Spondins on Wnt signaling (1-6). Lgr4 binds and forms complexes with R-Spondins, Frizzled Wnt receptors and LRP Wnt
co-receptors (5). It acts at least in part by enhancing Wnt-dependent LRP phosphorylation, internalization of LRPs, and accumulation of beta -catenin (3, 4). Mouse Lgr4 cDNA encodes 951 amino acids (aa), including a long N-terminal extracellular domain (ECD, aa 25-544) with 16-17 LRR domains that mediate ligand interaction (1). The LRR-containing ECD of mouse Lgr4 shares 93%, 97% and 90% aa sequence identity with human, rat and bovine Lgr4, respectively, and 52-53% aa identity with mouse Lgr5 and Lgr6. Rodent Lgr4 is widely expressed in both embryo and adult, with mRNA found in tissues including liver, kidney, adrenals, bone/cartilage, and heart (2, 7-9). Expression of Lgr4 mRNA in adult humans is highest in pancreas, followed by liver, heart, muscle, brain, and placenta (1). Lgr4 deletion in the mouse affects development in areas of expression, for example, inhibiting fetal liver definitive erythropoiesis, and arresting germ cell meiosis, thus blocking spermatogenesis (9, 10). Deletion of Lgr4 specifically from stem and progenitor cells in intestinal crypts induces loss of crypts due to insufficient Wnt signaling. LGR4-/- mice show hyperactivity of innate immune responses, and are also susceptible to more severe inflammatory bowel disease induction (5, 6, 11, 12). Lgr4 may be over-expressed in carcinomas and may promote invasiveness and metastasis by down‑regulating p27Kip1 expression (13).

  1. Loh, E.D. et al. (2001) Biochem. Biophys. Res. Commun. 282:757.
  2. Hsu, S.Y. et al. (1998) Mol. Endocrinol. 12:1830.
  3. Carmon, K.S. et al. (2011) Proc. Natl. Acad. Sci. USA 108:11452.
  4. Glinka, A. et al. (2011) EMBO Rep. 12:1055.
  5. de Lau, W. et al. (2011) Nature 476:293.
  6. Ruffner, H. et al. (2012) PLoS ONE 7:e40975.
  7. Van Schoore, G. et al. (2005) Histochem. Cell Biol. 124:35.
  8. Mazerbourg, S. et al. (2004) Mol. Endocrinol. 18:2241.
  9. Song, H. et al. (2008) J. Biol. Chem. 283:36687.
  10. Qian, Y. et al.(2013) Development 140:1751.
  11. Liu, S. et al. (2013) J. Biol. Chem. 288:8794.
  12. Du, B. et al. (2013) J. Biol. Chem. 288:15131.
  13. Gao, Y. et al. (2006) Cancer Res. 66:11623.

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Bioinformatics

Gene Symbol Lgr4
Uniprot