Spike Protein is a purified Active Protein. Purity: >90% by SDS-PAGE. Host: E. coli. Endotoxin Level: <1.0EU per 1ug, by the LAL method. Species: Universal. Target Name: Spike Protein. Accession Number: P0DTC2. Gene ID: 43740568. Expression Region: Met1~Arg685. Tag Info: N-terminal His Tag. Theoretical MW: 77.54kda. Buffer: 20mM Tris, 150mM NaCl, pH8.0, containing 1mM EDTA, 1mM DTT, 0.01% SKL, 5% Trehalose and Proclin300.. Target Synonyms: S Protein Restrictions: For Research Use Only. Not for use in diagnostic procedures.