1PP5:
reference: Structure of antibacterial peptide microcin J25: a 21-residue lariat protoknot., Bayro MJ, Mukhopadhyay J, Swapna GV, Huang JY, Ma LC, Sineva E, Dawson PE, Montelione GT, Ebright RH, J Am Chem Soc 2003 Oct 15;125(41):12382-3. PMID: 14531661

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