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Carthage College
Corresponding Faculty Member: Deb Tobiason, dtobiason@carthage.edu
This abstract WILL be considered for a talk.
Investigating Four Gordonia Bacteriophages: Apricot and the Three CR
Gunnar Goetz, Sarah Schmidt, Sarah Amburn, Juana Carrera, Indirah Conover, Brody Cornell, Dakota Fuss, Hannah Gregory, Alexis Kuhn, David La Rosa, Owen Lewer, Kathryn McKinnon, Cayden Sparks, Emily Vanderploeg, Tyra Wooster, Patrick Zaker, Brittany Niemann, Raven Poirier, Emily Wright, Dianna Bindelli, Anna Pitts, Adam Larson, Brady Sveen, Andrea Henle, Qinzi Ji, Deborah Tobiason

Due to the vast number of bacteriophages in existence, the potential of novel discoveries is high, and every additional bacteriophage contributes new genetic data. Through the SEA-PHAGES program, 78 bacteriophages were isolated at Carthage College during the 2016-17 school year, half of which infect Mycobacterium smegmatis, and the other half infect Gordonia terrae. Six phages were sequenced, and four Gordonia phages were annotated and further analyzed. The first annotated phage, Apricot, is a singleton and has a genome that is 52195 bps in length with 101 genes and defined ends. It shares the most similarity with cluster DN and DH phage and has two putative Lysin A genes and 10 orphams, one of which has a SecA translocase domain. Apricot is a temperate phage and immunity assays indicate that an Apricot lysogen is immune to infection with itself. Though, it is not immune to infection with the other three annotated phages, Emianna, Jifall16, and Kurt, which belong to cluster CR and are lytic. The cluster CR phages are very similar in regard to genome length and number of genes. Emianna, Jifall16, and Kurt contain a putative HicA-like toxin gene in their genomes. Further bioinformatic analyses of these phages are ongoing to explore the toxin gene, putative repeat sequences, and other sequences of interest. In addition, these four bacteriophages underwent further research using wet lab experiments to learn more about their individual characteristics such as phage particle stability at different temperatures.