1MI7:
reference: E. coli trp repressor forms a domain-swapped array in aqueous alcohol., Lawson CL, Benoff B, Berger T, Berman HM, Carey J, Structure. 2004 Jun;12(6):1099-108. PMID: 15274929

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