4JB8:
reference: Design, construction, and characterization of a second-generation DARPin library with reduced hydrophobicity., Seeger MA, Zbinden R, Flutsch A, Gutte PG, Engeler S, Roschitzki-Voser H, Grutter MG, Protein Sci. 2013 Jul 19. doi: 10.1002/pro.2312. PMID: 23868333

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