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VP7 trimer highlighting helix 9. (A) Cross section through the structure of VP7 above the smooth VP3 subcore. Helix 9 is highlighted in the context of the VP7 trimer and shown in more detail in relation to a single monomer in panel B. (C) The relative positions of the residues described in the text for assessment of the role of helix 9 in trimer-trimer interaction are shown.
