4J1U:
reference: Somatic hypermutation maintains antibody thermodynamic stability during affinity maturation., Wang F, Sen S, Zhang Y, Ahmad I, Zhu X, Wilson IA, Smider VV, Magliery TJ, Schultz PG, Proc Natl Acad Sci U S A. 2013 Feb 25. PMID: 23440204

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