4I7A:
reference: Bacterial microcompartment shells of diverse functional types possess pentameric vertex proteins., Wheatley NM, Gidaniyan SD, Liu Y, Cascio D, Yeates TO, Protein Sci. 2013 May;22(5):660-5. doi: 10.1002/pro.2246. Epub 2013 Apr 8. PMID: 23456886

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