1. Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA.
2. MacCHESS, Cornell High Energy Synchrotron Source, Cornell University, Ithaca, NY 14853, USA.
3. Ecole Polytechnique Fédérale de Lausanne (EPFL), Laboratory of Integrative and Systems Physiology, Lausanne CH-1015, Switzerland.
4. Proteomics and Mass Spectrometry Core Facility, Cornell University, Ithaca, NY 14853, USA.
5. Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA.
6. Department of Physiology, University of Hong Kong, Hong Kong, China