3K1L:
reference: The structure of the catalytic subunit FANCL of the Fanconi anemia core complex., Cole AR, Lewis LP, Walden H, Nat Struct Mol Biol. 2010 Mar;17(3):294-8. Epub 2010 Feb 14. PMID: 20154706

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