SARS S protein R667A, K968P, V969P, His Tag SPN-S52H6 is expressed from human 293 cells HEK293. It contains AA Ser 14 - Pro 1195 Acc ession AAP13567.1 R667A, K968P, V969P. The recombinant protein is expressed with T4 fibritin trimerization motif and 1 * 100 µG