Biotinylated HCoVHKU1 (isolate N5) Spike Trimer, His,Avitag (SPNH82E3) is expressed from human 293 cells (HEK293). It contains AA Ala 13 Asn 1276 (Accession Q0ZME71). Amino acid substitutions RRKRR 752756 GGSGS and NL 10671068 PP are introduced to abolish the furin cleavage site and stabilize the trimeric prefusion state of the spike protein, respectively. - Proteine/Peptide