6FRL:
reference: A flavin-dependent halogenase from metagenomic analysis prefers bromination over chlorination., Neubauer PR, Widmann C, Wibberg D, Schroder L, Frese M, Kottke T, Kalinowski J, Niemann HH, Sewald N, PLoS One. 2018 May 10;13(5):e0196797. doi: 10.1371/journal.pone.0196797., eCollection 2018. PMID: 29746521

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