3ZOM:
reference: Structural Bases for the Regulation of CO Binding in the Archaeal Protoglobin from Methanosarcina acetivorans., Tilleman L, Abbruzzetti S, Ciaccio C, De Sanctis G, Nardini M, Pesce A, Desmet F, Moens L, Van Doorslaer S, Bruno S, Bolognesi M, Ascenzi P, Coletta M, Viappiani C, Dewilde S, PLoS One. 2015 Jun 5;10(6):e0125959. doi: 10.1371/journal.pone.0125959., eCollection 2015. PMID: 26047471

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