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Full-Text Articles in Biochemistry

The Regulation Of Notch Signaling By Src Kinase And Polyphenolic Compounds, Bryce David Lafoya Aug 2018

The Regulation Of Notch Signaling By Src Kinase And Polyphenolic Compounds, Bryce David Lafoya

Boise State University Theses and Dissertations

Cellular signaling pathways provide cells with the means to sense their environment and communicate with other cells. The Notch signaling pathway is comprised of a set of protein machines which work in unison to coordinate cellular processes in response to stimuli coming from neighboring cells and changing microenvironmental conditions. Notch signaling is an important mode of cellular communication which is crucial to many processes involved in development and disease. During Notch activation, information about the extracellular environment is fed into the cell and relayed to the nucleus through a number of biochemical processes. The information-rich messages carried by Notch signaling …


Investigation Of Catalytic Activity Of Stable Β-Ketoacyl-Acp Substrate Analogs In Quorum Sensing Signal Synthesis, Nhu Lam May 2018

Investigation Of Catalytic Activity Of Stable Β-Ketoacyl-Acp Substrate Analogs In Quorum Sensing Signal Synthesis, Nhu Lam

Boise State University Theses and Dissertations

Quorum sensing is an intercellular mechanism used by many bacterial pathogens to regulate behaviors, such as motility, virulence, and antibiotic production. Disruption of quorum sensing is shown to be deleterious to bacterial pathogenicity, without causing lethality. In Gram-negative bacteria, acyl-homoserine lactone (AHL or acyl-HSL) signal molecules are synthesized by AHL synthase enzymes using acylated-acyl carrier protein (acyl-ACP) and S-adenosyl-L-methionine (SAM) as their substrates. Pantoea stewartii EsaI, which causes Stewart’s wilt in corn, and Yersinia pestis YspI, which causes bubonic plague are AHL synthases that use 3-oxohexanoyl-ACP and 3-oxooctanoyl-ACP as the acyl-substrate to synthesize 3-oxohexanoyl-HSL and 3-oxooctanoyl-HSL signals, respectively. Unfortunately, the …