2KOX:
reference: Weak Long-Range Correlated Motions in a Surface Patch of Ubiquitin Involved in Molecular Recognition., Fenwick RB, Esteban-Martin S, Richter B, Lee D, Walter KF, Milovanovic D, Becker S, Lakomek NA, Griesinger C, Salvatella X, J Am Chem Soc. 2011 Jul 13;133(27):10336-10339. Epub 2011 Jun 20. PMID: 21634390

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