4QT4:
reference: Crystal structure of peptidyl-tRNA hydrolase from a Gram-positive bacterium, Streptococcus pyogenes at 2.19 A resolution shows the closed structure of the substrate-binding cleft., Singh A, Gautam L, Sinha M, Bhushan A, Kaur P, Sharma S, Singh TP, FEBS Open Bio. 2014 Oct 22;4:915-22. doi: 10.1016/j.fob.2014.10.010. eCollection , 2014. PMID: 25389518

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