5I4R:
reference: Structure of a novel antibacterial toxin that exploits elongation factor Tu to cleave specific transfer RNAs., Michalska K, Gucinski GC, Garza-Sanchez F, Johnson PM, Stols LM, Eschenfeldt WH, Babnigg G, Low DA, Goulding CW, Joachimiak A, Hayes CS, Nucleic Acids Res. 2017 Sep 29;45(17):10306-10320. doi: 10.1093/nar/gkx700. PMID: 28973472

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