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Epidermal Growth Factor （EGF）, human

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產(chǎn)品型號Z00333

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產(chǎn)品簡介

Epidermal Growth Factor (EGF), human is a polypeptide growth factor which stimulates the proliferation of a wide range of epidermal and epithelial cells. Human EGF is a 6,200 Da protein containing

詳細(xì)介紹

Full Name
Epidermal Growth Factor （EGF）, human  
Abbreviated Name-1 rHuEGF
Abbreviated Name-2 Epidermal Growth Factor
Description Epidermal Growth Factor （EGF）, human is a polypeptide growth factor which stimulates the proliferation of a wide range of epidermal and epithelial cells. Human EGF is a 6,200 Da protein containing 53 amino acid residues.  
Source E. coli
M.W. 6.0 kDa+/-10% determined by reduced SDS-PAGE  
Purity Greater than 95% as determined by
（a） Analysis by SEC-HPLC
（b） Analysis by reducing and non-reducing SDS-PAGE Silver Stained gel
Endotoxin Level Less than 0.3 ng/μg （0.3 IEU/μg） determined by LAL test  
Specific Activity The ED50, calculated by the dose-dependant proliferation of murine BALB/c 3T3 cells is less then 2 ng/ml, corresponding to a specific activity of 5.0×105 IU/ mg.  
Storage Lyophilized rHuEGF although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution rHuEGF should be stored at 4°C between 2-7 days and for future use below -18°C. For long-term storage it is recommended to add a carrier protein （0.1% HSA or BSA）. Please avoid freeze-thaw cycles.  
Formulation The protein was lyophilized from a concentrated （1 mg/ml） solution with no additives.  
Reconstitution It is recommended to reconstitute the lyophilized rHuEGF in sterile 18 M?-cm H2O not less than 100 µg/ml, which can then be further diluted to other aqueous solutions. 
Quantitation Protein quantitation was carried out by two independent methods:
1. UV spectroscopy at 280 nm using the absorbency value of 2.858 as the extinction coefficient for a 0.1% （1 mg/ml） solution. This value is calculated by the PC GENE computer analysis program of protein sequences （InliGenetics）.
2. RP-HPLC analysis, using a calibrated solution of EGF as a reference standard. 
Sequence analysis The sequence of the first fifteen N-terminal amino acids was determined and was found to be Asn-Ser-Asp-Ser-Glu-Cys-Pro-Leu-Ser-His-Asp-Gly-Tyr-Cys-Leu.  


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