SARS-CoV-2 Spike S1 Protein (H49Y & 145-146 deletion & E484K & D614G, His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 76.5 kDa and the accession number is A0A6G7K2L4.
Molecular Weight:
76.5 kDa (predicted), 107.9 kDa (reducing condition, due to glycosylation)