6B1B:
reference: Structural Insights into Catalytic Versatility of the Flavin-dependent Hydroxylase (HpaB) from Escherichia coli., Shen X, Zhou D, Lin Y, Wang J, Gao S, Kandavelu P, Zhang H, Zhang R, Wang BC, Rose J, Yuan Q, Yan Y, Sci Rep. 2019 May 8;9(1):7087. doi: 10.1038/s41598-019-43577-w. PMID: 31068633

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