1IMP:
reference: Three-dimensional solution structure and 13C nuclear magnetic resonance assignments of the colicin E9 immunity protein Im9., Osborne MJ, Breeze AL, Lian LY, Reilly A, James R, Kleanthous C, Moore GR, Biochemistry 1996 Jul 23;35(29):9505-12. PMID: 8755730

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