1. Department of MedicineUniversity of Alabama at BirminghamBirmingham Alabama35294
2. Department of Microbiology, School of Dental MedicineUniversity of PennsylvaniaPhiladelphia Pennsylvania19104
3. Department of MicrobiologyUniversity of Alabama at BirminghamBirmingham Alabama35294
4. MacCHESS (Macromolecular Diffraction Facility at CHESS) Cornell UniversityIthaca New York14853
5. Abramson Cancer Center, School of MedicineUniversity of PennsylvaniaPhiladelphia Pennsylvania19104
6. Department of Chemistry and Chemical BiologyCornell Universityand NE‐CATArgonne Illinois60439