3QJM:
reference: The structural flexibility of the shank1 PDZ domain is important for its binding to different ligands., Lee JH, Park H, Park SJ, Kim HJ, Eom SH, Biochem Biophys Res Commun. 2011 Apr 1;407(1):207-12. Epub 2011 Mar 3. PMID: 21376703

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