4YMK:
reference: X-ray structure of a mammalian stearoyl-CoA desaturase., Bai Y, McCoy JG, Levin EJ, Sobrado P, Rajashankar KR, Fox BG, Zhou M, Nature. 2015 Jun 22. doi: 10.1038/nature14549. PMID: 26098370

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