Biotinylated SARS-CoV-2 Spike RBD  His Avitag (B.1.1.529/Omicron) (SPD-C82E4) is expressed from human 293 cells (HEK293). It contain s AA Arg 319 - Lys 537 (Accession # QHD43416.1 (G339D S371L S373P S375F K417N N440K G446S S477N T478K E484A Q498R N5 1 * 25 µG