1 1 Department of Microbiology and Immunology, University of California, San Francisco, California.
2 2 Departments of Biochemistry and Molecular Genetics, University of Toronto, Toronto, Ontario, Canada .
3 3 Department of Molecular and Cell Biology, University of California, Berkeley, California.
4 4 Department of Chemistry, University of California, Berkeley, California.
5 5 Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California.
6 6 Department of Biochemistry and Biophysics, University of California, San Francisco, California.
7 7 Gladstone Institutes, San Francisco, California.
8 8 Howard Hughes Medical Institute, University of California, Berkeley, California.
9 9 Innovative Genomics Institute, University of California, Berkeley, California.
10 10 Department of Microbiology and Immunology, University of Orago, Dunedin, New Zealand .
11 11 Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada .
12 12 Department of Biochemistry, Microbiology, and Bioinformatics, Faculty of Sciences and Engineering, Université Laval, Québec City, Quebec, Canada .
13 13 Danish Archaea Centre, Department of Biology, University of Copenhagen, Copenhagen, Denmark .
14 14 RNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, Massachusetts.
15 15 Department of Microbiology and Immunology, Montana State University, Bozeman, Montana.