Recombinant Human Follistatin

In stock

Catalog ID

100-41

Size	Stock	SKU	Unit Price
5 µg	In Stock	100-41-5UG	$73.00
20 µg	In Stock	100-41-20UG	$183.00
100 µg	In Stock	100-41-100UG	$705.00
500 µg	Inquire for Availability	100-41-500UG	$3,503.00
1 mg	Inquire for Availability	100-41-1MG	$5,839.00

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Details

Follistatin is an autocrine, activin-binding protein that is ubiquitously expressed with highest expression levels being in the ovary and skin. Follistatin negatively regulates the signaling of transforming growth factor beta (TGF-β) family members, such as activin, bone morphogenetic proteins (BMPs), myostatin, growth differentiation factor 11 (GDF-11), and TGF-β1. Follistatin functions as an antagonist by binding TGF-β family members to block interaction with their signaling receptors. Follistatin also inhibits the secretion of follicle-stimulating hormone (FSH) from the anterior pituitary.

Product images on the website are not representative of actual product, including, but not limited to differences in cap color, tube type, or label format.

Instructions

Centrifuge vial before opening. Suspend the product by gently pipetting the above recommended solution down the sides of the vial. DO NOT VORTEX. Allow several minutes for complete reconstitution. For prolonged storage, dilute to working aliquots in a 0.1% BSA solution, store at -80°C and avoid repeat freeze thaws.

Technical Specifications

Alternate Names	FS, activin-binding protein, FSH-suppressing protein (FSP)
Accession Number	P19883
Source	Genetically modified E.coli
Predicted Molecular Mass	Monomer, 31.7 kDa (289 aa)
AA Sequence	MGNCWLRQAK NGRCQVLYKT ELSKEECCST GRLSTSWTEE DVNDNTLFKW MIFNGGAPNC IPCKETCENV DCGPGKKCRMNKKNKPRCVC APDCSNITWK GPVCGLDGKT YRNECALLKA RCKEQPELEV QYQGRCKKTC RDVFCPGSST CVVDQTNNAY CVTCNRICPEPASSEQYLCG NDGVTYSSAC HLRKATCLLG RSIGLAYEGK CIKAKSCEDI QCTGGKKCLW DFKVGRGRCS LCDELCPDSK SDEPVCASDNATYASECAMK EAACSSGVLL EVKHSGSCN
Formulation	Lyophilized from a 0.2 µm filtered solution containing 10 mM sodium phosphate, 50 mM sodium chloride, pH 7.5
Product Reconstitution	Sterile water at 0.1 mg/mL
Country of Origin	USA

Specification*	Method of Determination	Acceptance Criteria
Purity	Reducing and Non-Reducing SDS PAGE	≥ 95%
Endotoxin	Kinetic LAL	≤ 0.1 EU/µg
Biological Activity (ED₅₀)	Neutralization of Human Activin A induced cytotoxicity of MPC-11 cells	≤ 200 ng/mL; ≥ 5.0 x 10³ units/mg

*Lot-specific values for the above specifications are supplied with each product on its corresponding COA. The values provided here are minimum expected values to pass internal requirements.

Specifications

Storage

At or below -20°C

Shelf Life

12 months from date of receipt when stored at -20°C to-80°C as supplied.

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