6LAD:
reference: The variable oligomeric state of Amuc_1100 from Akkermansia muciniphila., Wang J, Xiang R, Wang R, Zhang B, Gong W, Zhang J, Zhang M, Wang M, J Struct Biol. 2020 Jul 28:107593. doi: 10.1016/j.jsb.2020.107593. PMID: 32736072

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