4W7S:
reference: Crystal structure, mutational analysis and RNA-dependent ATPase activity of the yeast DEAD-box pre-mRNA splicing factor Prp28., Jacewicz A, Schwer B, Smith P, Shuman S, Nucleic Acids Res. 2014 Oct 10. pii: gku930. PMID: 25303995

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