1 Department of Biology, Stanford University, Palo Alto, CA, USA.
2 Sarafan ChEM-H Institute, Stanford University, Palo Alto, CA, USA.
3 The Howard Hughes Medical Institute, Palo Alto, CA, USA.
4 Laboratory of Bacteriology, Rocky Mountain Laboratories, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, USA.
5 Bacterial Vaccine Development Group, Vaccine and Infectious Disease Organization, University of Saskatchewan, Saskatoon, SK, Canada.
6 Department of Mechanical Engineering, Yale University, New Haven, CT, USA.
7 Microbial Sciences Institute, Yale West Campus, West Haven, CT, USA.
8 Department of Biology, Indiana University, Bloomington, IN, USA.
9 Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, CT, USA.
10 Department of Biology, Indiana University, Bloomington, IN, USA. xindan@indiana.edu.
11 Department of Biology, Stanford University, Palo Alto, CA, USA. jacobs-wagner@stanford.edu.
12 Sarafan ChEM-H Institute, Stanford University, Palo Alto, CA, USA. jacobs-wagner@stanford.edu.
13 The Howard Hughes Medical Institute, Palo Alto, CA, USA. jacobs-wagner@stanford.edu.