Biotinylated SARS-CoV-2 S protein RBD K417T,E484K,N501Y, His,Avitag SPD-C82E7 is expressed from human 293 cells HEK293. It contains AA Arg 319 - Lys 537 Accession QHD43416.1 K417T,E484K,N501Y. 1 * 25 µG