2MXD:
reference: Solution structure of the porcine sapovirus VPg core reveals a stable three-helical bundle with a conserved surface patch., Hwang HJ, Min HJ, Yun H, Pelton JG, Wemmer DE, Cho KO, Kim JS, Lee CW, Biochem Biophys Res Commun. 2015 Apr 17;459(4):610-6. doi:, 10.1016/j.bbrc.2015.02.156. Epub 2015 Mar 6. PMID: 25753201

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