Angew. Chem. Int. Ed. 2010, 49, 6802 –6805

A Cleavable Linker Based on the Levulinoyl Ester for Activity-Based
Protein Profiling

Paul P. Geurink, Bogdan I. Florea, Nan Li, Martin D. Witte, Joeri Verasdonck, Chi-Lin Kuo,
Gijs A. van der Marel, and Herman S. Overkleeft*