3IZ3:
reference: Atomic model of a cypovirus built from cryo-EM structure provides insight into the mechanism of mRNA capping., Cheng L, Sun J, Zhang K, Mou Z, Huang X, Ji G, Sun F, Zhang J, Zhu P, Proc Natl Acad Sci U S A. 2011 Jan 25;108(4):1373-8. Epub 2011 Jan 10. PMID: 21220303

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