6VQB:
reference: Structure of V-ATPase from the mammalian brain., Abbas YM, Wu D, Bueler SA, Robinson CV, Rubinstein JL, Science. 2020 Mar 13;367(6483):1240-1246. doi: 10.1126/science.aaz2924. PMID: 32165585

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