SARS-CoV-2 S protein RBD K417T, E484K, N501Y, His Tag SPD-C52Hr is expressed from human 293 cells HEK293. It contains AA Arg 319 - Lys 537 Accession QHD43416.1 K417T, E484K, N501Y. K417T E484K N501Y mutations were identified in the SARS-CoV-2 varian 1 * 100 µG