2K7S: Human Arnt C-Terminal Pas Domain, 3 Residue Ib Slip
reference: ARNT PAS-B has a fragile native state structure with an alternative beta-sheet register nearby in sequence space., Evans MR, Card PB, Gardner KH, Proc Natl Acad Sci U S A. 2009 Feb 24;106(8):2617-22. Epub 2009 Feb 5. PMID: 19196990

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