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Filtering by: Creator Karas, Michael Remove constraint Creator: Karas, Michael Degree Field Chemistry Remove constraint Degree Field: Chemistry

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  • Proteomic approach to the analysis of DNA-binding proteins using mass spectrometry

    Creator:
    Stapels, Martha Degen
    Abstract:
    In proteomic studies, separate experimental protocols have been necessary to identify proteins, determine their function, and predict their three-dimensional structure. In this study, a function-based separation of proteins was conceived to fractionate proteins prior to enzymatic digestion. In the initial demonstration of this technique, a DNA substrate was used to...
    Resource Type:
    Dissertation
    Full Text:
    academic committee: Dr. Michael Schuyler, Dr. James Ingle, Dr. Kevin Gable, and Dr. George Pearson. I

  • Mass spectrometric analysis of UV-crosslinked protein-nucleic acid complexes

    Creator:
    Doneanu, Catalin E.
    Abstract:
    The DNA-binding domains of E. coli uracil-DNA glycosylase (Ung) and human replication protein A (hRPA) were studied using a general protocol developed in our laboratory for probing protein-DNA interactions. The procedure involves purification and mass spectrometric analysis of the nucleopeptide-products of a tryptically digested UV-crosslinked protein-nucleic acid complex. In the...
    Resource Type:
    Dissertation
    Full Text:
    , Dr. Michael Schimerlik and Dr. John Simonsen. For all my friends who provided help, ideas and

  • Tandem mass spectrometric analysis of protein and peptide adducts of lipid peroxidation-derived aldehydes

    Creator:
    Wu, Jianyong
    Abstract:
    The adduction of proteins and other biomolecules by electrophilic lipid peroxidation products such as 4-hydroxy-2-nonenal (HNE), 4-oxo-2-nonenal (ONE), malondialdehyde (MDA) or acrolein (ACR) is thought to be an initiating and/or propagating factor in the pathophysiology of several diseases such as atherosclerosis, diabetes, Alzheimer's, Parkinson's and other age-related disorders. The identification...
    Resource Type:
    Dissertation
    Full Text:
    MS/MS analysis were performed to confirm the adduct type and the modification sites. Michael

  • Chemical labeling methods and mass spectrometry of mitochondrial thiol proteomes

    Creator:
    Wang, Jing
    Abstract:
    Dysfunction of mitochondria has been linked to aging and the pathogenesis of many degenerative diseases. Aside from their primary function in energy production, mitochondria are considered as a major source and target of reactive oxygen and nitrogen species (ROS/RNS) in cells as well. The mitochondrial thiol proteome is a subset...
    Resource Type:
    Dissertation
    Full Text:
    conducted in our group, i.e., Michael addition by 2-alkenals and disulfide exchange via glutathionylation

  • Gas-phase fragmentation chemistry of protonated peptide ions

    Creator:
    Bythell, Benjamin James
    Abstract:
    The fragmentation characteristics of protonated peptides have been investigated using tandem mass spectrometry (MS/MS) under various fragmentation regimes and detailed density functional theory (DFT) reaction pathway calculations. The DFT calculations predict novel salt-bridge stabilized transition structures as well as consecutive reactions occurring in proton-bound dimers for some of the ions...
    Resource Type:
    Dissertation

  • Aging and oxidative damage to mitochondrial membrane proteins

    Creator:
    Tong, Tony T.
    Abstract:
    Mitochondria provide energy for biological cells to function, but this process is also a source of oxygen radicals that are capable of damaging nearby proteins. Mitochondrial protein damage can eventually lead to cell death, especially in the case of heart cells, where mitochondria are present in the highest concentrations. As...
    Resource Type:
    Honors College Thesis
    Full Text:
    carbon-3 site by Michael-type addition. 1.4. Mass Spectrometry 1.4.1. Introduction to Mass Spectrometry

  • Effects of small molecule ligands on the conformational dynamics of the Farnesoid X Receptor ligand binding domain (FXR-LBD)

    Creator:
    Yang, Liping
    Abstract:
    The Farnesoid X Receptor (FXR) is a member of the nuclear receptor superfamily of transcription factors that plays a key role in the regulation of bile acids, lipid and glucose metabolisms. The regulative function of FXR is governed by conformational changes of the ligand binding domain (LBD) upon ligand binding....
    Resource Type:
    Dissertation