4GGV:
reference: Structural analysis of HmtT and HmtN involved in the tailoring steps of himastatin biosynthesis., Zhang H, Chen J, Wang H, Xie Y, Ju J, Yan Y, Zhang H, FEBS Lett. 2013 Jun 5;587(11):1675-80. doi: 10.1016/j.febslet.2013.04.013. Epub, 2013 Apr 20. PMID: 23611984

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