2024 Research in the Capitol

Presentation Type

Open Access Poster Presentation

Abstract

The DNA of living organisms is packaged into chromosomes differently in different species, but typically following a standard set of "rules." Understanding how DNA can be packaged for different species provides a better understanding of life and the genetic rules that must be followed, and the "rules" that can be broken. Mitochondria are crucial subcomponents of cells, providing the energy for life. Mitochondria always have their own mtDNA. In our study, we have learned that chewing lice mtDNA differs from that of other animals by spreading the genes across 12 separate small, circular chromosomes instead of one large, circular chromosome. We sequenced and mapped these minicircles to better understand the organization and rearrangement of genes through evolutionary time. Recognition of developmental rearrangements within the mtDNA allows for greater understanding of potential conditions that may lead to mitochondrial dysfunction. This knowledge may benefit the development of treatments for devastating mitochondrial diseases.

Start Date

25-3-2024 11:45 AM

End Date

25-3-2024 1:30 PM

Event Host

University Honors Programs, Iowa Regent Universities

Faculty Advisor

James W. Demastes

Faculty Advisor

Theresa A. Spradling

Department

Department of Biology

Department

Department of Nursing & Public Health

Comments

Also under the Department of Chemistry and Biochemistry.

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Mar 25th, 11:45 AM Mar 25th, 1:30 PM

Characterization of mtDNA Minicircles in a Chewing Louse, Geomydoecus centralis

The DNA of living organisms is packaged into chromosomes differently in different species, but typically following a standard set of "rules." Understanding how DNA can be packaged for different species provides a better understanding of life and the genetic rules that must be followed, and the "rules" that can be broken. Mitochondria are crucial subcomponents of cells, providing the energy for life. Mitochondria always have their own mtDNA. In our study, we have learned that chewing lice mtDNA differs from that of other animals by spreading the genes across 12 separate small, circular chromosomes instead of one large, circular chromosome. We sequenced and mapped these minicircles to better understand the organization and rearrangement of genes through evolutionary time. Recognition of developmental rearrangements within the mtDNA allows for greater understanding of potential conditions that may lead to mitochondrial dysfunction. This knowledge may benefit the development of treatments for devastating mitochondrial diseases.