Measured by its ability to induce cAMP accumulation in HEK293 human embryonic kidney cells transfected with human FSH R. The ED50 for this effect is 0.1-0.5 ng/mL.
Source
Chinese Hamster Ovary cell line, CHO-derived mouse FSH alpha/beta protein
<0.10 EU per 1 μg of the protein by the LAL method.
Applications/Dilutions
Dilutions
Bioactivity
Theoretical MW
24 kDa. 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
40-55 kDa, reducing conditions
Publications
Read Publications using 8576-FS/CF in the following applications:
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 with silver staining.
Reconstitution Instructions
Reconstitute at 100 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 FSH alpha/beta Protein, CF
FSH alpha/beta
Background
Follicle-Stimulating Hormone (FSH) beta is one of the components of the heterodimeric glycoprotein hormone FSH. FSH is composed of noncovalently linked glycosylated alpha and beta chains. The alpha subunit is also a component of Luteinizing Hormone (LH), Thyroid-Stimulating Hormone, and Chorionic Gonadotropin. The unique beta subunit confers the protein’s specific biological action and is responsible for the interaction with the FSH Receptor (1-3). The approximately 21 kDa mouse FSH beta subunit shares 85% and 95% aa sequence identity with the human and rat orthologs, respectively. FSH is produced and secreted by the anterior pituitary gland. Its secretion is controlled by Gonadotropin-Releasing Hormone from the hypothalamus; however, FSH secretion can also be stimulated by activins and inhibited by inhibins (4-6). FSH works in concert with LH to regulate female reproduction; FSH stimulates follicular growth and LH induces ovulation (7). FSH can also regulate estrogen formation by inducing the aromatase enzyme that converts androgen to estradiol (7, 8). In addition, it has been suggested to have a role in postmenopausal bone loss and in the neovascularization surrounding malignant tumors (9-11). In males, FSH is critical for sperm production (12). Mutations in the human FSH and FSHR genes are associated with reduced reproductive functioning in females (2, 11). Additionally, increased production of autoantibodies directed against FSH beta has been suggested to contribute to certain types of female infertility (2). Assisted reproductive technology commonly uses recombinant FSH to induce follicle growth (7).
Fox, K.M. et al. (2001) Mol. Endocrinol. 15:378.
Haller-Kikkatalo, K. et al. (2012) Clin. Dev. Immunol. 2012:762541.
Jiang, X. et al. (2014) Mol. Cell. Endocrinol. 382:424.
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