5N8B:
reference: Stepwise Evolution Improves Identification of Diverse Peptides Binding to a Protein Target., Lyamichev VI, Goodrich LE, Sullivan EH, Bannen RM, Benz J, Albert TJ, Patel JJ, Sci Rep. 2017 Sep 21;7(1):12116. doi: 10.1038/s41598-017-12440-1. PMID: 28935886

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