ACKNOWLEDGMENTS:
This project has been funded in whole or in part with Federal funds from the National Institute of Allergy and Infectious Diseases, under Contracts No. HHSN272201200026C and HHSN272201700060C and National Institute of General Medical Sciences grant GM118187, both at the National Institutes of Health, Department of Health and Human Services. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. Use of the LS-CAT Sector 21 was supported by the Michigan Economic Development Corporation and the Michigan Technology Tri-Corridor (Grant 085P1000817).
We would also like to acknowledge Drs. Nicole L. Inniss and Karla J.F. Satchell, both at Northwestern University Feinberg School of Medicine for help in editing and collecting data for this manuscript and Drs. Ievgeniia Dubrovska and Kristin Flores for technical assistance with the structure determination.