ABPP Methodology: Introduction and Overview, by Matthew B. Nodwell und Stephan A. Sieber Activity-Based Protein Profiling for Natural Product Target Discovery, by Joanna Krysiak und Rolf Breinbauer Photoaffinity Labeling in Activity-Based Protein Profiling, by Paul P. Geurink, Laurette M. Prely, Gijs A. van der Marel, Rainer Bischoff und Herman S. Overkleeft Application of Activity-Based Protein Profiling to the Study of Microbial Pathogenesis, by William P. Heal und Edward W. Tate Functional Analysis of Protein Targets by Metabolomic Approaches, by Yun-Gon Kim und Alan Saghatelian