3ST0:
reference: Visualization of synaptic inhibition with an optogenetic sensor developed by cell-free protein engineering automation., Grimley JS, Li L, Wang W, Wen L, Beese LS, Hellinga HW, Augustine GJ, J Neurosci. 2013 Oct 9;33(41):16297-309. doi: 10.1523/JNEUROSCI.4616-11.2013. PMID: 24107961

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