Description: Recombinant Mouse CD28 Protein is produced by mammalian expression system and the target gene encoding Asn20-Lys149 is expressed with a Fc, 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: CD28 Alternative Names: T-cell-specific surface glycoprotein CD28; TP44; CD28Entrez Gene (Mouse) : 12487SwissProt (Mouse) : P31041Purity : Greater than 95% as determined by reducing SDS-PAGE.Chemical Structure : NKILVKQSPL LVVDSNEVSL SCRYSYNLLA KEFRASLYKG VNSDVEVCVG NGNFTYQPQF RSNAEFNCDG DFDNETVTFR LWNLHVNHTD IYFCKIEFMY PPPYLDNERS NGTIIHIKEK HLCHTQSSPK VDDIEGRMDE PKSCDKTHTC PPCPAPELLG GPSVFLFPPK PKDTLMISRT PEVTCVVVDV SHEDPEVKFN WYVDGVEVHN AKTKPREEQY NSTYRVVSVL TVLHQDWLNG KEYKCKVSNK ALPAPIEKTI SKAKGQPREP QVYTLPPSRE EMTKNQVSLT CLVKGFYPSD IAVEWESNGQ PENNYKTTPP VLDSDGSFFL YSKLTVDKSR WQQGNVFSCS VMHEALHNHY TQKSLSLSPG KHHHHHH 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.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.