1. Affiliated Cancer Hospital & Institute, Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Guangzhou Medical University Guangzhou 510095 China
2. Dept. Chemistry Washington State University Pullman 99164 WA USA
3. Dept. Anesthesia Critical Care and Pain Medicine Massachusetts General Hospital/Harvard Medical School Boston MA 02114 USA
4. Department of Environmental Medicine and Molecular Toxicology Tohoku University Sendai 980-8575 Japan