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Nanodiscs: A Novel Approach To The Study Of The Methionine Abc Transporter System, Michael T. Winslow Aug 2023

Nanodiscs: A Novel Approach To The Study Of The Methionine Abc Transporter System, Michael T. Winslow

Master's Theses

Membrane transporter proteins play the vital role of moving compounds in and out of the cell and are essential for all living organisms. ATP Binding Cassette (ABC) family transporters function both as importers and exporters in prokaryotes. MetNI is an E. coli Type I ABC transporter responsible for the uptake of methionine into the cytosol from the cell periplasmic space through the cell membrane to maintain intracellular methionine pools. ABC transporters, like other membrane proteins, are most often mechanistically and structurally studied in vitro, solubilized by detergents. However, detergent micelles may affect the conformational changes of membrane proteins relative to …


The Threat Of Hospital Wastewater: An Evidence-Based Call To Action, Ann P. Nguyen May 2023

The Threat Of Hospital Wastewater: An Evidence-Based Call To Action, Ann P. Nguyen

DNP Qualifying Manuscripts

Introduction: Hospital wastewater carries a unique composition of pollutants, a burden that includes high chemical and biological residuals. These pollutants are discharged into sewage treatment plants and natural environments where they contaminate human water sources and larger ecosystems. Water treatment plants are not designed to treat the high loads of biomedical waste and persistent organic compounds found in hospital wastewater and therefore pollutants survive in conventionally treated water. Evidence of contaminated soil, municipal wastewater, surface water, ground water, and even drinking water have been demonstrated in studies conducted around the world highlighting the ubiquity of the problem. Hospital effluent as …


Quantifying Metal Interactions With The Antimicrobial Peptide Calcitermin, Maria G. Aviles-Sandoval, Michael Stevenson Jan 2023

Quantifying Metal Interactions With The Antimicrobial Peptide Calcitermin, Maria G. Aviles-Sandoval, Michael Stevenson

Featured Student Work

Antimicrobial Peptides (AMPs) are novel therapeutic agents that play important roles in the innate immune system with its ability to kill gram-positive and gram-negative bacteria. Antibiotics are losing their efficacy, thus requiring a larger dose of medicine for treatment resulting in the increase of antibiotic resistance. AMPs are an attractive approach for exploration due to their broad-spectrum activity and ease of synthesis. Furthermore, fewer bacteria have developed resistance to AMPs. Several AMPs have demonstrated increased antimicrobial activity with metal ions, like Zn(II) and Cu(II) binding to the peptide. In this study, we performed the purification of Calcitermin through high-performance liquid …