4IZ6:
reference: Structure determination of the functional domain interaction of a chimeric nonribosomal peptide synthetase from a challenging crystal with noncrystallographic translational symmetry., Sundlov JA, Gulick AM, Acta Crystallogr D Biol Crystallogr. 2013 Aug;69(Pt 8):1482-92. doi:, 10.1107/S0907444913009372. Epub 2013 Jul 18. PMID: 23897471

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