Stereo- and Regioselective Azide/Alkyne Cycloadditions in Carbonic Anhydrase II via Tethering, Monitored by Crystallography and Mass Spectrometry.
Schulze Wischeler, J., Sun, D., Sandner, N.U., Linne, U., Heine, A., Koert, U., Klebe, G.(2011) Chemistry 17: 5842-5851
- PubMed: 21506176 
- DOI: 10.1002/chem.201002437
- Primary Citation of Related Structures:  
3KIG, 3KNE - 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 ...