1VJ6:
reference: Demonstration of long-range interactions in a PDZ domain by NMR, kinetics, and protein engineering., Gianni S, Walma T, Arcovito A, Calosci N, Bellelli A, Engstrom A, Travaglini-Allocatelli C, Brunori M, Jemth P, Vuister GW, Structure. 2006 Dec;14(12):1801-9. PMID: 17161370

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