SRP3045
Follistatin human
recombinant, expressed in E. coli, ≥98% (SDS-PAGE), ≥98% (HPLC), suitable for cell culture
Synonym(s):
FS, activins-binding protein
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About This Item
UNSPSC Code:
12352200
NACRES:
NA.32
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biological source
human
recombinant
expressed in E. coli
assay
≥98% (HPLC)
≥98% (SDS-PAGE)
form
lyophilized
potency
0.1-0.4 μg/mL
mol wt
31.5 kDa
packaging
pkg of 20 μg
technique(s)
cell culture | mammalian: suitable
impurities
<1.0 EU/μg endotoxin, tested
color
white to off-white
suitability
suitable for molecular biology
UniProt accession no.
shipped in
wet ice
storage temp.
−20°C
Gene Information
human ... FST(10468)
General description
Research area: Cell Signaling
Follistatin is expressed in the pituitary, ovaries, decidual cells of the endometrium, and in some other tissues. The gene is mapped to human chromosome 5q11.2. Recombinant human Follistatin is a 31.5kDa protein containing 288 amino acids. Its primary structure contains three cysteine-rich domains (called FS domains), each followed by a protease-inhibitory kazal domain.
Follistatin is expressed in the pituitary, ovaries, decidual cells of the endometrium, and in some other tissues. The gene is mapped to human chromosome 5q11.2. Recombinant human Follistatin is a 31.5kDa protein containing 288 amino acids. Its primary structure contains three cysteine-rich domains (called FS domains), each followed by a protease-inhibitory kazal domain.
Application
Follistatin human has been used to suppress myostatin signaling. It has also been used as an inhibitor of activin A.
Biochem/physiol Actions
Follistatin is a multifunctional secreted protein that binds to ligands of the TGF (transforming growth factor)-β family and regulates their activity by inhibiting their access to signaling receptors. It was originally discovered as an activin antagonist whose activity suppresses expression and secretion of the pituitary hormone FSH (follicle-stimulating hormone). In addition to being a natural antagonist, follistatin can inhibit the activity of other TGF (transforming growth factor)-β ligands including BMP (bone morphogenetic protein)-2,-4,-6,-7, Myostatin, GDF-11 (growth differentiation factor 11), and TGF-b1. In gonads, it is responsible for oocyte competence and embryo development. In the pituitary gland, it causes cyclic changes in FSH production in the estrous cycle. Follistatin also participates in bone metabolism. It controls inflammation, fibrosis, and tissue repair. Levels of plasma follistatin increase in polycystic ovary syndrome and type 2 diabetes. Follistatin might also be involved in tumor progression, including apoptosis, angiogenesis, and metastasis.
Sequence
GNCWLRQAKN GRCQVLYKTE LSKEECCSTG RLSTSWTEED VNDNTLFKWM IFNGGAPNCI PCKETCENVD CGPGKKCRMN KKNKPRCVCA PDCSNITWKG PVCGLDGKTY RNECALLKAR CKEQPELEVQ YQGRCKKTCR DVFCPGSSTC VVDQTNNAYC VTCNRICPEP ASSEQYLCGN DGVTYSSACH LRKATCLLGR SIGLAYEGKC IKAKSCEDIQ CTGGKKCLWD FKVGRGRCSL CDELCPDSKS DEPVCASDNA TYASECAMKE AACSSGVLLE VKHSGSCN
Physical form
Lyophilized from 10 mM sodium phosphate, 50 mM sodium chloride, pH 7.5.
Reconstitution
Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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S Inouye et al.
Endocrinology, 129(2), 815-822 (1991-08-01)
Follistatin is a glycosylated monomeric protein originally isolated from ovarian follicular fluid based on its ability to specifically inhibit pituitary FSH release. To further explore the physiological role of follistatin, we have expressed recombinant human follistatins with 315 (rhFS-315) and
Inhibins, activins, and follistatins: the saga continues.
L V DePaolo
Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine (New York, N.Y.), 214(4), 328-339 (1997-04-01)
Ashlee W Harris et al.
Neuromuscular disorders : NMD, 25(9), 699-705 (2015-06-10)
Spinal muscular atrophy (SMA), a leading genetic cause of pediatric death in the world, is an early-onset disease affecting the motor neurons in the anterior horn of the spinal cord. This degeneration of motor neurons leads to loss of muscle
Serum Levels of Follistatin Are Positively Associated With Serum-Free Thyroxine Levels in Patients With Hyperthyroidism or Euthyroidism.
Tseng FY, et al.
Medicine, 95, e2661-e2661 (2016)
Myostatin knockout drives browning of white adipose tissue through activating the AMPK-PGC1a-Fndc5 pathway in muscle.
Shan T, et al.
Faseb Journal, 27, 1981-1989 (2013)
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