5I4A:
reference: A bacterial Argonaute with noncanonical guide RNA specificity., Kaya E, Doxzen KW, Knoll KR, Wilson RC, Strutt SC, Kranzusch PJ, Doudna JA, Proc Natl Acad Sci U S A. 2016 Mar 30. pii: 201524385. PMID: 27035975

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