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Alignment of the NP protein among closely related betacoronaviruses: peptide sequences from SARS-CoV-2 (NCBI YP_009724390), RaTG13-CoV (NCBI QHR63300), and SARS-CoV-1 (NCBI BAE93401) were aligned using ClustalW. Conserved residues (3/3) are shown in dark blue, (2/3) in teal, (1/3) in gray.
