5LTK:
reference: Structural insights into the mechanism of the DEAH-box RNA helicase Prp43., Tauchert MJ, Fourmann JB, Luhrmann R, Ficner R, Elife. 2017 Jan 16;6. pii: e21510. doi: 10.7554/eLife.21510. PMID: 28092261

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