3R8B:
reference: Molecular Basis of a Million-Fold Affinity Maturation Process in a Protein-Protein Interaction., Bonsor DA, Postel S, Pierce BG, Wang N, Zhu P, Buonpane RA, Weng Z, Kranz DM, Sundberg EJ, J Mol Biol. 2011 Jun 12. PMID: 21689661

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