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The 3D structure of NSP5 is shown in pink & gray and the nucleic acids of RNA are shown in cyan(U), yellow(C), red(A), and green(G). Residues of His41/Cys145 are catalytic dyad. The hydrogen bonds between guanine34 and Asn142 & Ser46 are clear. This figure was produced by the UCSF Chimera 1.14-linux_x86_64 (https://www.cgl.ucsf.edu/chimera/download.html).
