6AP1:
reference: The AAA ATPase Vps4 binds ESCRT-III substrates through a repeating array of dipeptide-binding pockets., Han H, Monroe N, Sundquist WI, Shen PS, Hill CP, Elife. 2017 Nov 22;6. doi: 10.7554/eLife.31324. PMID: 29165244

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