6UKL:
reference: DiB-splits: nature-guided design of a novel fluorescent labeling split system., Bozhanova NG, Gavrikov AS, Mishin AS, Meiler J, Sci Rep. 2020 Jul 6;10(1):11049. doi: 10.1038/s41598-020-67095-2. PMID: 32632329

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