6KCS:
reference: Structure of HIRAN domain of human HLTF bound to duplex DNA provides structural basis for DNA unwinding to initiate replication fork regression., Hishiki A, Sato M, Hashimoto H, J Biochem. 2020 Jun 1;167(6):597-602. doi: 10.1093/jb/mvaa008. PMID: 31960921

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