1. Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
2. Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
3. Resource for Native Mass Spectrometry Guided Structural Biology, The Ohio State University, Columbus, Ohio 43210, United States
4. School of Biological Sciences, Washington State University, Pullman, Washington 99164, United States
5. Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States