4FF7:
reference: Effects of a buried cysteine-to-serine mutation on yeast triosephosphate isomerase structure and stability., Hernandez-Santoyo A, Dominguez-Ramirez L, Reyes-Lopez CA, Gonzalez-Mondragon E, Hernandez-Arana A, Rodriguez-Romero A, Int J Mol Sci. 2012;13(8):10010-21. doi: 10.3390/ijms130810010. Epub 2012 Aug 10. PMID: 22949845

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