Biotinylated SARS-CoV-2 Spike RBD (L452R), His,Avitag (SPD-C82E3) is expressed from human 293 cells (HEK293). It contains AA Arg 319 - Lys 537 (Accession # QHD43416.1 (L452R)). The L452R mutation was identified in the SARS-CoV-2 Epsilon variant (Pan 1 * 200 µG