3EP3:
reference: Structural basis for putrescine activation of human S-adenosylmethionine decarboxylase., Bale S, Lopez MM, Makhatadze GI, Fang Q, Pegg AE, Ealick SE, Biochemistry. 2008 Dec 16;47(50):13404-17. PMID: 19053272

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