4MIF:
reference: Crystal structures of pyranose 2-oxidase suggest that the N-terminus acts as a propeptide that assists in homotetramer assembly., Hassan N, Tan TC, Spadiut O, Pisanelli I, Fusco L, Haltrich D, Peterbauer CK, Divne C, FEBS Open Bio. 2013 Nov 5;3:496-504. PMID: 24282677

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