Qian T, Wo J, Zhang Y, Song Q, Feng G, Luo R, Lin S, Wu G, Chen HF (2017) <br />Crystal Structure of StnA for the Biosynthesis of Antitumor Drug Streptonigrin Reveals a Unique Substrate Binding Mode<br /><i>Sci Rep</i> <b>7</b>: 40254<br /><br />