RCSB PDB - 3KIG: Mutant carbonic anhydrase II in complex with an azide and an alkyne (original) (raw)
Stereo- and Regioselective Azide/Alkyne Cycloadditions in Carbonic Anhydrase II via Tethering, Monitored by Crystallography and Mass Spectrometry.
[Schulze Wischeler, J.](/search?q=citation.rcsb%5Fauthors:Schulze Wischeler, J.), [Sun, D.](/search?q=citation.rcsb%5Fauthors:Sun, D.), [Sandner, N.U.](/search?q=citation.rcsb%5Fauthors:Sandner, N.U.), [Linne, U.](/search?q=citation.rcsb%5Fauthors:Linne, U.), [Heine, A.](/search?q=citation.rcsb%5Fauthors:Heine, A.), [Koert, U.](/search?q=citation.rcsb%5Fauthors:Koert, U.), [Klebe, G.](/search?q=citation.rcsb%5Fauthors:Klebe, G.)
(2011) Chemistry 17: 5842-5851
PubMed: 21506176 Search on PubMed
PubMed Abstract:
The carbonic anhydrase II mutant His64Cys was prepared and applied to tethered alkyne/azide cycloaddition reactions. The azide component could be tethered to the enzyme surface through a disulfide bridge, while the alkyne component was reversibly coordinated through a sulfonamide anchor to the zinc ion in the original catalytic center of the enzyme. The incipient orientation of the reactants in the binding site and of the formed triazole product were characterized by crystallography. The reaction progression could be monitored by HPLC-MS analysis.
Organizational Affiliation:
Institut für Pharmazeutische Chemie, Philipps-Universität Marburg, Marbacher Weg 6, 35032 Marburg, Germany.