5H8J:
reference: Structural Investigations of N-carbamoylputrescine Amidohydrolase from Medicago truncatula: Insights into the Ultimate Step of Putrescine Biosynthesis in Plants., Sekula B, Ruszkowski M, Malinska M, Dauter Z, Front Plant Sci. 2016 Mar 30;7:350. doi: 10.3389/fpls.2016.00350. eCollection, 2016. PMID: 27066023

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