Description: Recombinant COVID-19 Envelope Protein is produced by E.coli expression system and the target gene encoding Met1-Val75 is expressed with a beta-barrel platform protein, 6His tag at the N-terminus. Form: Liquid in a 0.2 μm filtered solution of 20mM Tris-HCl, 200mM NaCl, pH 8.0. Alternative Names: 2019-nCoV E protein; 2019-nCoV sM proteinEntrez Gene (Human): QHD43418.1Purity : Greater than 95% as determined by reducing SDS-PAGE.Chemical Structure : MYSFVSEETG TLIVNSVLLF LAFVVFLLVT LAILTALRLC AYCCNIVNVS LVKPSFYVYS RVKNLNSSRV PDLLVDirections for Use : Please minimize freeze-thaw cycles. Quality Control : Endotoxin: Less than 0.1 ng/µg (1 IEU/µg) as determined by LAL test.Storage/Stability : Store it at -20°C to -80°C for one year. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.