3CZJ:
reference: Practical Considerations When Using Temperature to Obtain Rate Constants and Activation Thermodynamics of Enzymes with Two Catalytic Steps: Native and N460T-beta-Galactosidase (E. coli) as Examples., Kappelhoff JC, Liu SY, Dugdale ML, Dymianiw DL, Linton LR, Huber RE, Protein J. 2009 Feb;28(2):96-103. PMID: 19229596

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