4Q4E:
reference: Structural basis for the inhibition of M1 family aminopeptidases by the natural product actinonin: Crystal structure in complex with E. coli aminopeptidase N., Ganji RJ, Reddi R, Gumpena R, Marapaka AK, Arya T, Sankoju P, Bhukya S, Addlagatta A, Protein Sci. 2015 Feb 2. doi: 10.1002/pro.2653. PMID: 25644575

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).