5U1D:
reference: Structure of the transporter associated with antigen processing trapped by herpes simplex virus., Oldham ML, Grigorieff N, Chen J, Elife. 2016 Dec 9;5. pii: e21829. doi: 10.7554/eLife.21829. PMID: 27935481

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