1MYJ:
reference: Distal pocket polarity in ligand binding to myoglobin: structural and functional characterization of a threonine68(E11) mutant., Smerdon SJ, Dodson GG, Wilkinson AJ, Gibson QH, Blackmore RS, Biochemistry 1991 Jun 25;30(25):6252-60. PMID: 1905570

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