Description：Recombinant Human CD279 Protein is produced by mammalian expression system and the target gene encoding Leu25-Gln167 is expressed with a Fc tag at the C-terminus.Form：Lyophilized from a 0.2 μm filtered solution of PBS, pH7.4.Gene Symbol：PDCD1Alternative Names：PD1; Programmed cell death protein 1; Protein PD-1; hPD-1; CD279 Entrez Gene (Human)： 5133; SwissProt (Human)： Q15116; Purity：Greater than 95% as determined by reducing SDS-PAGE.Chemical Structure：LDSPDRPWNP PTFSPALLVV TEGDNATFTC SFSNTSESFV LNWYRMSPSN QTDKLAAFPE DRSQPGQDSR FRVTQLPNGR DFHMSVVRAR RNDSGTYLCG AISLAPKAQI KESLRAELRV TERRAEVPTA HPSPSPRPAG QFQHHHHHHDirections 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.