3CWG:
reference: Crystal structure of unphosphorylated STAT3 core fragment., Ren Z, Mao X, Mertens C, Krishnaraj R, Qin J, Mandal PK, Romanowski MJ, McMurray JS, Chen X, Biochem Biophys Res Commun. 2008 Apr 18;. PMID: 18433722

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