Activity-Based Ubiquitin-α-amidomethyl Acrylate Probe for Profiling of Ubiquitinating Enzymes and Deubiquitinases.
Activity-based ubiquitin probes have emerged as powerful tools for dissecting protein ubiquitination. In this work, we discovered that an α-amidomethyl-substituted acrylate electrophile exhibits markedly enhanced reactivity. Based on this finding, we designed and synthesized a new activity-based probe, ubiquitin-α-amid...