1VRQ:
reference: Crystal structure of heterotetrameric sarcosine oxidase from Corynebacterium sp. U-96., Ida K, Moriguchi T, Suzuki H, Biochem Biophys Res Commun 2005 Jul 29;333(2):359-66. PMID: 15946648

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