Follistatin Antibody (FST/4281) [CoraFluor™ 1]

CoraFluor™ 1, amine reactive (Catalog:7920) and CoraFluor™ 2, amine reactive (Catalog # 7950) are terbium-based probes that have been developed for use as TR-FRET donors. They emit wavelengths compatible with commonly used fluorescent acceptor dyes such as BODIPY® (or BDY) and Janelia Fluor® dyes, FITC (Catalog # 5440), TMR and Cyanine 5 (Catalog # 5436). CoraFluor™ fluorescence is brighter and more stable in biological media than existing TR-FRET donors, leading to enhanced sensitivity and improved data generation. CoraFluor™ 1 exhibits excitation upon exposure to a 337 nm UV laser.

• Reactivity: Hu
• Applications: ELISA, IHC
• Clone: FST/4281
• Clonality: Monoclonal
• Host: Mouse
• Conjugate: CoraFluor 1

Follistatin Antibody (FST/4281) [CoraFluor™ 1] Summary

• Description: CoraFluor(TM) 1 is a high performance terbium-based TR-FRET (Time-Resolved Fluorescence Resonance Energy Transfer) or TRF (Time-Resolved Fluorescence) donor for high throughput assay development. CoraFluor(TM) 1 absorbs UV light at approximately 340 nm, and emits at approximately 490 nm, 545 nm, 585 nm and 620 nm. It is compatible with common acceptor dyes that absorb at the emission wavelengths of CoraFluor(TM) 1. CoraFluor(TM) 1 can be used for the development of robust and scalable TR-FRET binding assays such as target engagement, ternary complex, protein-protein interaction and protein quantification assays.
  
  CoraFluor(TM) 1, amine reactive
  
  CoraFluor(TM) 1, thiol reactive
  
  For more information, please see our CoraFluor(TM) TR-FRET technology flyer.
• Immunogen: Raised to human Follistatin (Fst) 288 and recognizes both human Fst 288 and 315 (Uniprot: P19883)
• Localization: Secreted.
• Specificity: Follistatin is a single-chain glycosylated protein that inhibits follicle stimulating hormone (FSH) release. Alternative splicing of Follistatin mRNA yields two isoforms, FS315 and FS288. FS288 is the main cell-surface form and binds to surface heparin sulphate proteoglycans. FST/4281 is a clone raised against recombinant Fst 288, and is used in combination, commonly as the capture, with antibody FST/4282 in a two site ELISA for the detection of Follistatin.
• Isotype: IgG1
• Clonality: Monoclonal
• Host: Mouse
• Gene: FST
• Purity: Protein A or G purified

Applications/Dilutions

• Dilutions:
  • ELISA
  • Immunohistochemistry-Paraffin
• Application Notes: Optimal dilution of this antibody should be experimentally determined.

Packaging, Storage & Formulations

• Storage: Store at 4C in the dark. Do not freeze.
• Buffer: PBS
• Preservative: No Preservative
• Purity: Protein A or G purified

Notes

CoraFluor (TM) is a trademark of Bio-Techne Corp. Sold for research purposes only under agreement from Massachusetts General Hospital. US patent 2022/0025254

Alternate Names for Follistatin Antibody (FST/4281) [CoraFluor™ 1]

• follistatin isoform FST317
• Follistatin
• FS
• FSActivin-binding protein
• FST

Background

FST, also known as Follistatin, has a 344 amino acid long isoform that is 38 kDa and a short 317 amino acid that is 35 kDa, functions as an activin antagonist binding directly to it and inhibits the biosynthesis and secretion of pituitary follicle stimulating hormone (FSH). Studies of this protein are being performed in relation to polycystic ovary syndrome, pituitary adenoma, insulin resistance, Down syndrome, plasmacytoma, lymphocytic leukemia, pituitary tumor infertility, endometrial carcinoma, teratocarcinoma, azoospermia, meningitis, hepatocellular carcinoma, ovarian carcinoma, liver disease, endometriosis, prostate carcinoma, prostatitis, ovarian cancer, and adenoma. This protein has been also shown to have interactions with ANG, DIP2A, BMP4, FN1, and TXN in signal transduction activin A signaling regulation and TGF-beta signaling pathways.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Bioinformatics

• Gene Symbol: FST