bioRxiv preprint doi: https://doi.org/10.1101/743518; this version posted August 22, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. 1 Resurrection of a Global, Metagenomically Defined Microvirus 2 3 4 5 Paul C. Kirchberger* and Howard Ochman 6 7 8 9 10 Department of Integrative Biology 11 University of Texas at Austin 12 Austin, Texas 78712, USA 13 14 15 16 17 18 *Corresponding author. Email:
[email protected] 19 bioRxiv preprint doi: https://doi.org/10.1101/743518; this version posted August 22, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. 20 Abstract 21 The Gokushovirinae (family Microviridae) are a group of single-stranded, circular 22 DNA bacteriophages that have been detected in metagenomic datasets from every 23 ecosystem on the planet. Despite their abundance, little is known about their biology or 24 their bacterial hosts: isolates are exceedingly rare, known only from a very small 25 number of obligate intracellular bacteria. By synthesizing circularized phage genomes 26 from prophages embedded in diverse enteric bacteria, we produced viable 27 gokushovirus phage particles that could reliably infect E. coli, thereby allowing 28 experimental analysis of its life cycle and growth characteristics.