bioRxiv preprint doi: https://doi.org/10.1101/865204; this version posted December 5, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. 1 2 A Distinct Contractile Injection System Found in a Majority of Adult Human 3 Microbiomes 4 5 6 Maria I. Rojas*1,2, Giselle S. Cavalcanti*1,2, Katelyn McNair1,3, Sean Benler1,2, Amanda 7 T. Alker1,2, Ana G. Cobián-Güemes1,2, Melissa Giluso1,3, Kyle Levi1,3, Forest Rohwer1,2,3, 8 Sinem Beyhan2,4, Robert A. Edwards1,2,3, Nicholas J. Shikuma#1,2,3,4 9 10 11 1Viral Information Institute 12 San Diego State University 13 San Diego, California 92182 USA 14 15 2Department of Biology 16 San Diego State University 17 San Diego, California 92182 USA 18 19 3Computational Science Research Center 20 San Diego State University 21 San Diego, California 92182 USA 22 23 4Department of Infectious Diseases 24 J. Craig Venter Institute 25 La Jolla, California 92037 USA 26 27 *co-first authors 28 #corresponding author 29
[email protected] 1 bioRxiv preprint doi: https://doi.org/10.1101/865204; this version posted December 5, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. 30 ABSTRACT 31 An imbalance of normal bacterial groups such as Bacteroidales within the human gut is 32 correlated with diseases like obesity. A current grand challenge in the microbiome field is 33 to identify factors produced by normal microbiome bacteria that cause these observed 34 health and disease correlations.