1G4D:
reference: The Mu repressor-DNA complex contains an immobilized 'wing' within the minor groove., Wojciak JM, Iwahara J, Clubb RT, Nat Struct Biol 2001 Jan;8(1):84-90. PMID: 11135677

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