Recombinant SARS-CoV-2 Nucleocapsid protein (N protein), full length encompassing amino acids 1-419(end). This protein corresponds to SARS-CoV-2 Variant B.1.351 (Beta Variant) originally discovered in South Africa, and contains mutation T205I. The construct also contains a C-terminal Avi-Tag™ followed by a His-tag (6xHis). The recombinant protein was affinity purified.