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Other structures of SARS-CoV proteins. (a) Solution structure of the N-terminal RNA-binding domain of the SARS-CoV N protein (PDB code 1SSK). (b) X-ray crystal structure of nsp9, an ssRNA-binding protein (PDB code 1UW7). (c) X-ray crystal structure of the accessory protein Orf7a (PDB code 1XAK). (d) X-ray crystal structure of the s2m, a rigorously conserved RNA element of the SARS-CoV genome.
