Description：Recombinant Human NGF Protein is produced by E. coli. It is a single non-glycosylated non-covalent homodimer of two 118 amino acid polypeptides each with a molecular mass of 13.4 kD.Form：Lyophilized from a 0.2 μM filtered solution of 20mM PB, 250mM NaCl, pH 7.0.Gene Symbol：NGFAlternative Names：NGFB; Beta-nerve growth factor; Beta-NGF Entrez Gene (Human)： 4803; SwissProt (Human)： P01138; Purity：Greater than 95% as determined by SEC-HPLC and reducing SDS-PAGE.Chemical Structure：SSSHPIFHRG EFSVCDSVSV WVGDKTTATD IKGKEVMVLG EVNINNSVFK QYFFETKCRD PNPVDSGCRG IDSKHWNSYC TTTHTFVKAL TMDGKQAAWR FIRIDTACVC VLSRKAVRRADirections for Use：Always centrifuge tubes before opening. Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100 μg/ml. Dissolve the lyophilized protein in 1X PBS. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.Quality Control：Endotoxin: Less than 0.1 ng/μg (1 IEU/μg) as determined by LAL test.Storage/Stability：Lyophilized protein should be stored at -20°C, though stable at room temperature for 3 weeks. Reconstituted protein solution can be stored at 2-8°C for 2-7 days. Aliquots of reconstituted samples are stable at -20°C for 3 months.