Description：Recombinant Human Visfatin Protein is produced by E.coli expression system and the target gene encoding Met1-His491 is expressed with a 6His tag at the N-terminus.Form：Lyophilized from a 0.2 μm filtered solution of 20mM HEPES, 150mM NaCl, pH8.0.Gene Symbol：NAMPTAlternative Names：PBEF; PBEF1; Nicotinamide phosphoribosyltransferase; NAmPRTase; Nampt; Pre-B-cell colony-enhancing factor 1; Pre-B cell-enhancing factor; Visfatin Entrez Gene (Human)： 10135; SwissProt (Human)： P43490; Purity：Greater than 95% as determined by reducing SDS-PAGE.Chemical Structure：MNHKVHHHHH HMNPAAEAEF NILLATDSYK VTHYKQYPPN TSKVYSYFEC REKKTENSKL RKVKYEETVF YGLQYILNKY LKGKVVTKEK IQEAKDVYKE HFQDDVFNEK GWNYILEKYD GHLPIEIKAV PEGFVIPRGN VLFTVENTDP ECYWLTNWIE TILVQSWYPI TVATNSREQK KILAKYLLET SGNLDGLEYK LHDFGYRGVS SQETAGIGAS AHLVNFKGTD TVAGLALIKK YYGTKDPVPG YSVPAAEHST ITAWGKDHEK DAFEHIVTQF SSVPVSVVSD SYDIYNACEK IWGEDLRHLI VSRSTQAPLI IRPDSGNPLD TVLKVLEILG KKFPVTENSK GYKLLPPYLR VIQGDGVDIN TLQEIVEGMK QKMWSIENIA FGSGGGLLQK LTRDLLNCSF KCSYVVTNGL GINVFKDPVA DPNKRSKKGR LSLHRTPAGN FVTLEEGKGD LEEYGQDLLH TVFKNGKVTK SYSFDEIRKN AQLNIELEAA HHDirections 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 ddH2O. 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.