6A8V:
reference: Identification of an internal cavity in the PhoQ sensor domain for PhoQ activity and SafA-mediated control., Yoshitani K, Ishii E, Taniguchi K, Sugimoto H, Shiro Y, Akiyama Y, Kato A, Utsumi R, Eguchi Y, Biosci Biotechnol Biochem. 2019 Jan 11:1-11. doi: 10.1080/09168451.2018.1562879. PMID: 30632929

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