1J4Q:
reference: Solution structures of two FHA1-phosphothreonine peptide complexes provide insight into the structural basis of the ligand specificity of FHA1 from yeast Rad53., Yuan C, Yongkiettrakul S, Byeon IJ, Zhou S, Tsai MD, J Mol Biol 2001 Nov 30;314(3):563-75. PMID: 11846567

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