2W2G:
reference: The SARS-unique domain (SUD) of SARS coronavirus contains two macrodomains that bind G-quadruplexes., Tan J, Vonrhein C, Smart OS, Bricogne G, Bollati M, Kusov Y, Hansen G, Mesters JR, Schmidt CL, Hilgenfeld R, PLoS Pathog. 2009 May;5(5):e1000428. Epub 2009 May 15. PMID: 19436709

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