1R4H:
reference: Mutational and structural analysis of stem-loop IIIC of the hepatitis C virus and GB virus B internal ribosome entry sites., Rijnbrand R, Thiviyanathan V, Kaluarachchi K, Lemon SM, Gorenstein DG, J Mol Biol 2004 Oct 29;343(4):805-17. PMID: 15476802

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