Structure-Based Library Design and the Discovery of a Potent and Selective Mast Cell Beta-Tryptase Inhibitor as an Oral Therapeutic Agent.
Liang, G., Aldous, S., Merriman, G., Levell, J., Pribish, J., Cairns, J., Chen, X., Maignan, S., Mathieu, M., Tsay, J., Sides, K., Rebello, S., Whitely, B., Morize, I., Pauls, H.W.(2012) Bioorg Med Chem Lett 22: 1049
- PubMed: 22192588 
- DOI: https://doi.org/10.1016/j.bmcl.2011.11.119
- Primary Citation of Related Structures:  
4A6L - PubMed Abstract: 
A solid phase combinatorial library was designed based on X-ray structures and in-silico models to explore an inducible S4+ pocket, which is formed by a simple side-chain rotation of Tyr95. This inducible S4+ pocket is unique to β-tryptase and does not exist for other trypsin-like serine proteases of interest. Therefore, inhibitors utilizing this pocket have inherent advantages for being selective against other proteases in the same family. A member of this library was found to be a potent and selective β-tryptase inhibitor with a suitable pharmacokinetic profile for further clinical evaluation.
Organizational Affiliation: 
Molecular Innovative Therapeutics, Sanofi Pharmaceuticals, USA. guyan.liang@sanofi.com