4NEO:
reference: The crystal structure of BlmI as a model for nonribosomal peptide synthetase peptidyl carrier proteins., Lohman JR, Ma M, Cuff ME, Bigelow L, Bearden J, Babnigg G, Joachimiak A, Phillips GN Jr, Shen B, Proteins. 2014 Jul;82(7):1210-8. PMID: 25050442

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