3ALN:
reference: Crystal structures of MKK4 kinase domain reveal that substrate peptide binds to an allosteric site and induces an auto-inhibition state., Matsumoto T, Kinoshita T, Kirii Y, Yokota K, Hamada K, Tada T, Biochem Biophys Res Commun. 2010 Sep 24;400(3):369-73. Epub 2010 Aug 21. PMID: 20732303

This OCA Structure page
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