6KH8:
reference: High Resolution Structure of A Partially Folded Insulin Aggregation Intermediate., Ratha BN, Kar RK, Brender JR, Pariary R, Sahoo B, Kalita S, Bhunia A, Proteins. 2020 Jul 18. doi: 10.1002/prot.25983. PMID: 32683793

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