4LBB:
reference: Single, Double and Quadruple Alanine Substitutions at Oligomeric Interfaces Identify Hydrophobicity as the Key Determinant of Human Neutrophil Alpha Defensin HNP1 Function., Zhao L, Tolbert WD, Ericksen B, Zhan C, Wu X, Yuan W, Li X, Pazgier M, Lu W, PLoS One. 2013 Nov 13;8(11):e78937. doi: 10.1371/journal.pone.0078937. PMID: 24236072

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