Mouse Follistatin-related Gene Protein/FLRG Biotinylated Antibody

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Mouse Follistatin-related Gene Protein/FLRG Biotinylated Antibody Summary

Species Reactivity
Detects Follistatin-related Gene Protein/FLRG in Western blots.
Polyclonal Goat IgG
Antigen Affinity-purified
Mouse myeloma cell line NS0-derived recombinant mouse Follistatin-related Gene Protein/FLRG
Accession # Q9EQC7
Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.


Recommended Concentration
Western Blot
0.1 µg/mL
Recombinant Mouse Follistatin-related Gene Protein/FLRG (Catalog # 1255-F3)
5-15 µg/mL
Perfusion fixed frozen sections of mouse skin

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.

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Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
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.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: Follistatin-related Gene Protein/FLRG

Follistatin-Related Gene Protein (FLRG), also known as follistatin-like 3 (FSTL3) is a glycoprotein belonging to the follistatin-module protein family. Mouse FLRG cDNA encodes a 256 amino acid (aa) residue protein with a putative 23 aa signal peptide, an N-terminal domain, two cysteine-rich follistatin-like domains (FS) and a C‑terminal acidic domain. Compared to follistatin, FLRG lacks the third FS domain found in follistatin. In addition, FLRG also lacks the heparin-binding domain found within the first amino-terminal FS domain of follistatin. Mouse and human FLRG share approximately 83% aa sequence homology. Like follistatin, FLRG has been shown to bind and inhibit the activities of TGF-beta family ligands including activin, BMP-2, -6, -7 and GDF-8/myostatin. While both FLRG and follistatin are located in a wide and overlapping range of adult and fetal tissue, their sites of peak expression differ: FLRG most highly in heart, lung, kidney, placenta and testis, while follistatin is highest in ovary and pituitary. The expression of FLRG is upregulated by TGF-beta and activin signaling through Smad proteins. Although FLRG is a secreted protein in many cell types, it has also been localized to the nuclear compartment in HeLa, 293 and CHO cells (1‑5).

  1. Tsuchida, K. et al. (2000) J. Biol. Chem. 275:40778.
  2. Sidis, Y. et al. (2002) Endocrinology 143:1613.
  3. Tortoriello, D.V. et al. (2001) Endocrinology 142:3426.
  4. Hill, J. et al. (2002) J. Biol. Chem. 277:40735.
  5. Bartholin, L. et al. (2001) Oncogene 20:5409.
Entrez Gene IDs
10272 (Human); 83554 (Mouse)
Alternate Names
FLRG; FLRGFSRP; follistatin-like 3 (secreted glycoprotein); Follistatin-like 3; Follistatin-like protein 3; Follistatin-related gene protein; follistatin-related protein 3; FSTL3

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Mouse Follistatin-related Gene Protein/FLRG Biotinylated Antibody
By Anonymous on 07/08/2020
Application: ELISA Sample Tested: Recombinant protein Species: Human