7BR2:
reference: Structure of a gut microbial diltiazem-metabolizing enzyme suggests possible substrate binding mode., Zhou S, Ko TP, Huang JW, Liu W, Zheng Y, Wu S, Wang Q, Xie Z, Liu Z, Chen CC, Guo RT, Biochem Biophys Res Commun. 2020 Jun 30;527(3):799-804. doi:, 10.1016/j.bbrc.2020.04.116. Epub 2020 May 16. PMID: 32423809

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