4ICS:
reference: Structure-based elucidation of the regulatory mechanism for aminopeptidase activity., Ta HM, Bae S, Han S, Song J, Ahn TK, Hohng S, Lee S, Kim KK, Acta Crystallogr D Biol Crystallogr. 2013 Sep;69(Pt 9):1738-47. doi:, 10.1107/S0907444913012651. Epub 2013 Aug 15. PMID: 23999297

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