4HI4:
reference: Architecture of the soluble receptor Aer2 indicates an in-line mechanism for PAS and HAMP domain signaling., Airola MV, Huh D, Sukomon N, Widom J, Sircar R, Borbat PP, Freed JH, Watts KJ, Crane BR, J Mol Biol. 2012 Dec 26. pii: S0022-2836(12)00944-8. doi:, 10.1016/j.jmb.2012.12.011. PMID: 23274111

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