5TKR:
reference: Trade-offs between enzyme fitness and solubility illuminated by deep mutational scanning., Klesmith JR, Bacik JP, Wrenbeck EE, Michalczyk R, Whitehead TA, Proc Natl Acad Sci U S A. 2017 Feb 28;114(9):2265-2270. doi:, 10.1073/pnas.1614437114. Epub 2017 Feb 14. PMID: 28196882

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