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Full-Text Articles in Genetics and Genomics

Retrotransposons Are The Major Contributors To The Expansion Of The Drosophila Ananassae Muller F Element, Wilson Leung, Gerard Mcneil Aug 2017

Retrotransposons Are The Major Contributors To The Expansion Of The Drosophila Ananassae Muller F Element, Wilson Leung, Gerard Mcneil

Publications and Research

The discordance between genome size and the complexity of eukaryotes can partly be attributed to differences in repeat density. The Muller F element (5.2 Mb) is the smallest chromosome in Drosophila melanogaster, but it is substantially larger (.18.7 Mb) in D. ananassae. To identify the major contributors to the expansion of the F element and to assess their impact, we improved the genome sequence and annotated the genes in a 1.4-Mb region of the D. ananassae F element, and a 1.7-Mb region from the D element for comparison. We find that transposons (particularly LTR and LINE retrotransposons) are major contributors …


Retrotransposons Are The Major Contributors To The Expansion Of The Drosophila Ananassae Muller F Element, Wilson Leung, Martin G. Burg, Spencer M. Batten, Lindsay M. Corbeill, Erica Enoch, Jesse J. Ensign, Mary E. Franks, Breanna Haiker, Judith A. Ingles, Lyndsay D. Kirkland, Josha M. Lorenz-Guertin, Jordan Matthews, Cody M. Mittig, Nicholaus Monsma, Katherine J. Olson, Guillermo Perez-Aragon, Alen Ramic, Jordan R. Ramirez, Christopher Scheiber, Patrick A. Schneider, Devon E. Schultz, Matthew Simon, Eric Spencer, Adam C. Wernette, Maxine E. Wykle, Elizabeth Zavala-Arellano, Mitchell J. Mcdonald, Kristine Ostby, Peter Wendland Aug 2017

Retrotransposons Are The Major Contributors To The Expansion Of The Drosophila Ananassae Muller F Element, Wilson Leung, Martin G. Burg, Spencer M. Batten, Lindsay M. Corbeill, Erica Enoch, Jesse J. Ensign, Mary E. Franks, Breanna Haiker, Judith A. Ingles, Lyndsay D. Kirkland, Josha M. Lorenz-Guertin, Jordan Matthews, Cody M. Mittig, Nicholaus Monsma, Katherine J. Olson, Guillermo Perez-Aragon, Alen Ramic, Jordan R. Ramirez, Christopher Scheiber, Patrick A. Schneider, Devon E. Schultz, Matthew Simon, Eric Spencer, Adam C. Wernette, Maxine E. Wykle, Elizabeth Zavala-Arellano, Mitchell J. Mcdonald, Kristine Ostby, Peter Wendland

Peer Reviewed Articles

The discordance between genome size and the complexity of eukaryotes can partly be attributed to differences in repeat density. The Muller F element (∼5.2 Mb) is the smallest chromosome in Drosophila melanogaster, but it is substantially larger (>18.7 Mb) in D. ananassae. To identify the major contributors to the expansion of the F element and to assess their impact, we improved the genome sequence and annotated the genes in a 1.4-Mb region of the D. ananassae F element, and a 1.7-Mb region from the D element for comparison. We find that transposons (particularly LTR and LINE retrotransposons) …


Sumo Regulates The Activity Of Smoothened And Costal-2 In Drosophila Hedgehog Signaling, Jie Zhang, Yajuan Liu, Kai Jiang, Jianhang Jia Feb 2017

Sumo Regulates The Activity Of Smoothened And Costal-2 In Drosophila Hedgehog Signaling, Jie Zhang, Yajuan Liu, Kai Jiang, Jianhang Jia

Markey Cancer Center Faculty Publications

In Hedgehog (Hh) signaling, the GPCR-family protein Smoothened (Smo) acts as a signal transducer that is regulated by phosphorylation and ubiquitination, which ultimately change the cell surface accumulation of Smo. However, it is not clear whether Smo is regulated by other post-translational modifications, such as sumoylation. Here, we demonstrate that knockdown of the small ubiquitin-related modifier (SUMO) pathway components Ubc9 (a SUMO-conjugating enzyme E2), PIAS (a SUMO-protein ligase E3), and Smt3 (the SUMO isoform in Drosophila) by RNAi prevents Smo accumulation and alters Smo activity in the wing. We further show that Hh-induced-sumoylation stabilizes Smo, whereas desumoylation by Ulp1 …