1ODD:
reference: Escherichia coli positive regulator OmpR has a large loop structure at the putative RNA polymerase interaction site., Kondo H, Nakagawa A, Nishihira J, Nishimura Y, Mizuno T, Tanaka I, Nat Struct Biol 1997 Jan;4(1):28-31. PMID: 8989318

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