5H1P:
reference: Structural and dynamic insights into the role of conformational switching in the nuclease activity of the Xanthomonas albilineans Cas2 in CRISPR-mediated adaptive immunity., Ka D, Hong S, Jeong U, Jeong M, Suh N, Suh JY, Bae E, Struct Dyn. 2017 May 19;4(5):054701. doi: 10.1063/1.4984052. eCollection 2017, Sep. PMID: 28612041

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