3EIU:
reference: A second transient position of ATP on its trail to the nucleotide-binding site of subunit B of the motor protein A(1)A(O) ATP synthase., Manimekalai MS, Kumar A, Balakrishna AM, Gruber G, J Struct Biol. 2008 Dec 24. PMID: 19138746

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