The active site of Trichoderma reesei cellobiohydrolase II: the role of tyrosine 169.
Koivula, A., Reinikainen, T., Ruohonen, L., Valkeajarvi, A., Claeyssens, M., Teleman, O., Kleywegt, G.J., Szardenings, M., Rouvinen, J., Jones, T.A., Teeri, T.T.(1996) Protein Eng 9: 691-699
- PubMed: 8875646 
- DOI: 10.1093/protein/9.8.691
- Primary Citation of Related Structures:  
1CB2 - PubMed Abstract: 
Trichoderma reesei cellobiohydrolase II (CBHII) is an exoglucanase cleaving primarily cellobiose units from the non-reducing end of cellulose chains. The beta-1,4 glycosidic bond is cleaved by acid catalysis with an aspartic acid, D221, as the likely proton donor, and another aspartate, D175, probably ensuring its protonation and stabilizing charged reaction intermediates ...