1MIG:
reference: Catalytic antibody model and mutagenesis implicate arginine in transition-state stabilization., Roberts VA, Stewart J, Benkovic SJ, Getzoff ED, J Mol Biol 1994 Jan 21;235(3):1098-116. PMID: 8289310

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