Description：Recombinant Human CD200 Protein is produced by mammalian expression system and the target gene encoding Gln31-Gly232 is expressed with a 6His tag at the C-terminus.Form：Lyophilized from a 0.2 μm filtered solution of 20mM PB, 150mM NaCl, pH 7.4.Gene Symbol：CD200Alternative Names：MOX1; MOX2; OX-2 membrane glycoprotein; CD200 Entrez Gene (Human)： 4345; SwissProt (Human)： P41217; Molecular Weight：23.48 kD (Mass), 35-50 kD (reducing conditions)Purity：Greater than 95% as determined by reducing SDS-PAGE.Chemical Structure：QVQVVTQDER EQLYTPASLK CSLQNAQEAL IVTWQKKKAV SPENMVTFSE NHGVVIQPAY KDKINITQLG LQNSTITFWN ITLEDEGCYM CLFNTFGFGK ISGTACLTVY VQPIVSLHYK FSEDHLNITC SATARPAPMV FWKVPRSGIE NSTVTLSHPN GTTSVTSILH IKDPKNQVGK EVICQVLHLG TVTDFKQTVN KGVDHHHHHHQuality Control：Endotoxin: Less than 1 EU/µg as determined by LAL test.Directions 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. 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.