2LKS:
reference: Cross-Validation of the Structure of a Transiently Formed and Low Populated FF Domain Folding Intermediate Determined by Relaxation Dispersion NMR and CS-Rosetta., Barette J, Velyvis A, Religa TL, Korzhnev DM, Kay LE, J Phys Chem B. 2011 Dec 23. PMID: 22148426

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