2Y9H:
reference: An RNA-induced conformational change required for CRISPR RNA cleavage by the endoribonuclease Cse3., Sashital DG, Jinek M, Doudna JA, Nat Struct Mol Biol. 2011 Jun;18(6):680-7. Epub 2011 May 15. PMID: 21572442

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