5AOC:
reference: The Structure of a Novel Thermophilic Esterase from the Planctomycetes Species, Thermogutta terrifontis Reveals an Open Active Site Due to a Minimal 'Cap' Domain., Sayer C, Szabo Z, Isupov MN, Ingham C, Littlechild JA, Front Microbiol. 2015 Nov 23;6:1294. doi: 10.3389/fmicb.2015.01294. eCollection, 2015. PMID: 26635762

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