1MYK:
reference: Crystal structure, folding, and operator binding of the hyperstable Arc repressor mutant PL8., Schildbach JF, Milla ME, Jeffrey PD, Raumann BE, Sauer RT, Biochemistry 1995 Jan 31;34(4):1405-12. PMID: 7827088

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