3WAK:
reference: Crystal structures of an archaeal oligosaccharyltransferase provide insights into the catalytic cycle of N-linked protein glycosylation., Matsumoto S, Shimada A, Nyirenda J, Igura M, Kawano Y, Kohda D, Proc Natl Acad Sci U S A. 2013 Oct 14. PMID: 24127570

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