▍Backgound

FGF-4 (fibroblast growth factor-4), also known as FGF-K or K-FGF (Kaposi’s sarcoma-associated FGF), is a 25 kDa secreted, heparin-binding member of the FGF family. The human FGF-4 cDNA encodes 206 amino acids (aa) with a 33 aa signal sequence and a 173 aa mature protein with an FGF homology domain that contains a heparin binding region near the C-terminus. Mature human FGF-4 (aa 71-206) shares 91%, 82%, 94% and 91% aa identity with mouse, rat, canine and bovine FGF-4, respectively. Human FGF-4 has been shown to exhibit cross species activity. Expression of FGF-4 and its receptors, FGF R1c, 2c, 3c and 4, is spatially and temporally regulated during embryonic development. Its expression in the mouse trophoblast inner cell mass promotes expression of FGF R2, and is required for maintenance of the trophectoderm and primitive endoderm.

▍Source

Recombinant Human FGF-4 is expressed from Escherichia coli. It contains AA Ser 71 - Leu 206. Predicted molecular mass 19.6 kDa. This protein carries a polyhistidine tag at the N-terminus.

Recombinant Human FGF-4 is expressed from Escherichia coli

▍Endotoxin

Less than 1.0 EU per μg by the LAL method.

▍AA Sequence

SGAGDYLLGIKRLRRLYCNVGIGFHLQALPDGRIGGAHADTRDSLLELSPVERGVVSIFGVASRFFVAMSSKGKLYGSPFFTDECTFKEILLPNNYNAYESYKYPG

MFIALSKNGKTKKGNRVSPTMKVTHFLPRL

▍Purity

Purity >95% as determined by SDS-PAGE.

▍Formulation

Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization. Contact us for customized product form or formulation.

▍Reconstitution

Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at < -20°C. Further dilutions should be made in appropriate buffered solutions.

▍Storage

For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Please avoid repeated freeze-thaw cycles.

This product is stable after storage at

-20°C to -70°C for 12 months in lyophilized state;

-70°C for 3 months under sterile conditions after reconstitution.

▍SDS-PAGE

Human FGF-4, His Tag on SDS-PAGE under reducing (R) condition

Human FGF-4, His Tag on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 95%.

廈門逸漠生物科技有限公司(Xiamen Immocell Biotechnology Co.,Ltd.)坐落于廈門國家留學(xué)創(chuàng)業(yè)園(翔安)產(chǎn)業(yè)園，是一家專注于細胞生物學(xué)領(lǐng)域新產(chǎn)品、新技術(shù)開發(fā)的高新技術(shù)企業(yè)。
公司擁有一支具有深厚造詣和豐富經(jīng)驗的高端技術(shù)人才，建設(shè)了高規(guī)格的研發(fā)實驗室與生產(chǎn)車間，建立了規(guī)范的研發(fā)、生產(chǎn)、銷售、客服管理體系。
公司與國內(nèi)外多家醫(yī)院、高等院校、科研院所、生物醫(yī)藥公司建立了良好的合作關(guān)系，贏得了良好的市場聲譽和廣泛的客戶認可，將努力成為生命科學(xué)界可靠的合作伙伴和堅強的技術(shù)后盾。
企業(yè)文化我們的使命：
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1.精益求精、開拓創(chuàng)新把成熟的產(chǎn)品做到非凡，把創(chuàng)新的產(chǎn)品做到超乎想象。
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