5A1V:
reference: VESICULAR TRANSPORT. A structure of the COPI coat and the role of coat proteins in membrane vesicle assembly., Dodonova SO, Diestelkoetter-Bachert P, von Appen A, Hagen WJ, Beck R, Beck M, Wieland F, Briggs JA, Science. 2015 Jul 10;349(6244):195-8. doi: 10.1126/science.aab1121. PMID: 26160949

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