1NGJ:
reference: Structural basis of the 70-kilodalton heat shock cognate protein ATP hydrolytic activity. II. Structure of the active site with ADP or ATP bound to wild type and mutant ATPase fragment., Flaherty KM, Wilbanks SM, DeLuca-Flaherty C, McKay DB, J Biol Chem 1994 Apr 29;269(17):12899-907. PMID: 8175707

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