5AHT:
reference: The Nedd4-1 WW Domain Recognizes the PY Motif Peptide through Coupled Folding and Binding Equilibria., Panwalkar V, Neudecker P, Schmitz M, Lecher J, Schulte M, Medini K, Stoldt M, Brimble MA, Willbold D, Dingley AJ, Biochemistry. 2016 Jan 15. PMID: 26685112

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