| 1GPU: reference: Snapshot of a key intermediate in enzymatic thiamin catalysis: crystal structure of the alpha-carbanion of (alpha,beta-dihydroxyethyl)-thiamin diphosphate in the active site of transketolase from Saccharomyces cerevisiae., Fiedler E, Thorell S, Sandalova T, Golbik R, Konig S, Schneider G, Proc Natl Acad Sci U S A 2002 Jan 22;99(2):591-5. PMID: 11773632 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).