5SXP:
reference: Molecular Basis of Interactions Between SH3 Domain-Containing Proteins and the Proline-Rich Region of the Ubiquitin Ligase Itch., Desrochers G, Cappadocia L, Lussier-Price M, Ton AT, Ayoubi R, Serohijos A, Omichinski JG, Angers A, J Biol Chem. 2017 Feb 24. pii: jbc.M116.754440. doi: 10.1074/jbc.M116.754440. PMID: 28235806

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