5ZAI:
reference: Structural Insight into Substrate Specificity of 3-Hydroxypropionyl-Coenzyme A Dehydratase from Metallosphaera sedula., Lee D, Kim KJ, Sci Rep. 2018 Jul 16;8(1):10692. doi: 10.1038/s41598-018-29070-w. PMID: 30013155

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