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优势特色（Features）
- Designed under ISO 9001:2015 and ISO 13485:2016
- Manufactured and QC tested under a GMP compliance factory
- Animal-Free materials
- Beta-lactam materials free
- Batch-to-batch consistency
- Stringent quality control tests
- No animal derived peptone and lactose used in production process
表达区间及表达系统（Source）
GMP Human FGF basic Protein (GMP-FGCH17) is expressed from E. coli cells. It contains AA Pro 143 - Ser 288 (Accession # P09038-4).
Predicted N-terminus: Pro 143
Request for sequence
蛋白结构（Molecular Characterization）
This protein carries no "tag".
The protein has a calculated MW of 16.5 kDa. The protein migrates as 17 kDa±3 kDa under reducing (R) condition (SDS-PAGE).
内毒素（Endotoxin）
Less than 10 EU/mg by the LAL method.
宿主蛋白残留（Host Cell Protein）
<0.5 ng/µg of protein tested by ELISA.
宿主核酸残留（Host Cell DNA）
<0.02 ng/μg of protein tested by qPCR.
无菌（Sterility）
The sterility testing was performed by membrane filtration method described in CP<1101>, USP<71> and Eur. Ph. 2.6.1.
支原体（Mycoplasma）
Negative.
纯度（Purity）
>95% as determined by SDS-PAGE.
制剂（Formulation）
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with protectants.
Contact us for customized product form or formulation.
运输（Shipping）
This product is supplied and shipped with blue ice, please inquire the shipping cost.
存储（Storage）
Upon receipt, store it immediately at -20°C or lower for long term storage.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
- -20°C to -70°C for 5 years in lyophilized state;
- -70°C for 12 months under sterile conditions after reconstitution.
产品数据图
电泳（SDS-PAGE）
GMP Human FGF basic Protein on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.
活性（Bioactivity）-Bioactivity CELL BASE
GMP Human FGF basic Protein (Cat. No. GMP-FGCH17) stimulates proliferation of NIH/3T3 cells. The specific activity of GMP Human FGF basic Protein is >2.50 x 10^6 IU/mg, which is calibrated against Basic Fibroblast Growth Factor WHO International Standard (NIBSC code: 90/712) (QC tested).
Protocol
The activity of GMP Human FGF basic Protein (Cat. No. GMP-FGCH17) was higher than other competing products.
应用数据（Application Data）
FGF basic (Cat. No. GMP-FGCH17) could highly support stemness maintenance in ESC/iPSC compared to other companies.
Left: The mRNA expression of pluripotent stem cell markers (Oct4, Nanog) was higher in Acro than in company R and company P.
Right: When FGF basic (35 μg/mL) is added into the culture media (StemSure hPSC medium) for iPSC, the cells remain high expression of pluripotent (Oct4+ or Nanog+; pink) markers.
GMP Human SCF Protein (Cat. No. GMP-SCFH25), GMP Human Thrombopoietin Protein (Cat. No. GMP-THNH25), GMP Human Flt-3 Ligand Protein (Cat. No. GMP-FLLH28), GMP Human FGF basic Protein (Cat. No. GMP-FGCH17) and GMP Human VEGF165 Protein (Cat. No. GMP-VE5H23) could significantly promote the iPSC differentiation to HSPCs after 14 days, highly expressed hematopoietic stem cell markers CD34 and CD45.
GMP Human FGF basic Protein (Cat. No. GMP-FGCH17) and GMP Human TGF-Beta 1 Protein (Cat. No. GMP-TG1H25) could maintain the stemness of hiPSCs with high expression of stem cell genes OCT4, SOX2, and SSEA4 with GMP Human Laminin 521 Protein (Cat. No. GMP-LA5H24).
稳定性（Stability）
The Cell based assay shows that GMP Human FGF basic Protein (Cat. No. GMP-FGCH17) is stable at 37°C for 24 hours.
The Cell based assay shows that GMP Human FGF basic Protein (Cat. No. GMP-FGCH17) is stable after freezing and thawing 3 times.
The Cell based assay shows that GMP Human FGF basic Protein (Cat. No. GMP-FGCH17 ) is stable at 4℃ for 30 days.
The Cell based assay shows batch-to-batch consistency between Acro's GMP and PG FGF basic.
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背景
FGF basic (also known as FGF2 and HBGF-2) is an 18-34 kDa, heparin-binding member of the FGF superfamily of molecules (1-3). Superfamily members are characterized by the presence of a centrally placed beta -trefoil structure. FGF acidic (FGF-1) and FGF basic (FGF2) were the first two identified FGFs, and the designations acidic and basic refer to their relative isoelectric points. Human FGF basic is 288 amino acids (aa) in length. There are multiple start sites, four of which utilize atypical CUG codons, and one that initiates at an AUG start site (4 - 6). The four CUG start sites generate high molecular weight (HMW) FGF basic. There is a 34 kDa, 288 aa form, a 24 kDa, 210 aa form, a 22.5 kDa, 201 aa form, and a 22 kDa, 196 aa form. All are retained intracellularly, undergo extensive methylation, and possess one or more nuclear localization signals (NLS) (7-9). The AUG initiating form is 18 kDa and 155 aa in length. There is no signal sequence (ss). It is, however, secreted directly through the plasma membrane via a mechanism that appears to be dependent upon tertiary structure (10). In place of a ss, there is purportedly a 9 aa N-terminal prosegment that precedes a 146 aa mature segment (11). Early isolations of 18 kDa bovine FGF basic yielded 146 aa molecules, an effect attributed to the presence of acid proteases (12). The molecule contains a heparin-binding site (aa residues 128-144), and undergoes phosphorylation at Ser117 (13). There is also an ill-defined C-terminal NLS that may be more “functional” (or 3-dimensional) than structural (7). Human 146 aa FGF basic is 97% aa identical to mouse FGF basic (14).
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