3DXJ:
reference: The RNA polymerase "switch region" is a target for inhibitors., Mukhopadhyay J, Das K, Ismail S, Koppstein D, Jang M, Hudson B, Sarafianos S, Tuske S, Patel J, Jansen R, Irschik H, Arnold E, Ebright RH, Cell. 2008 Oct 17;135(2):295-307. PMID: 18957204

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