Search results

Title: Yellow nutsedge (Cyperus esculentus L.) control with Bentazon (3-isopropyl-1H̲-2,1,3-benzothiadiazin-(4)-3H̲-one 2,2-dioxide) and glyphosate (N̲-(phosphonomethyl) clygine)
Creator: Suwanketnikom, Rungsit
Date: 1978
Collection: Electronic Theses & Dissertations

Title: Yelesalehe hiwayona dikanohogida naiwodusv = : God taught me this song, it is beautiful : Cherokee performance rhetorics as decolonization, healing, and continuance
Creator: Driskill, Qwo-Li
Date: 2008
Collection: Electronic Theses & Dissertations
Description: "This dissertation examines the importance of performed and embodied rhetorics to Cherokee survival and resistance and argues for performance as a primary site of Native cultural continuance and rhetorical production. Two historiographic studies are central to making this argument. The first, Indian In The Archive: Performance Historiography as Cherokee Ghost Dance (Chapter Three) looks to the Cherokee Ghost Dance and the Redbird Smith movement as models for radical, decolonial, performative...
Show more"This dissertation examines the importance of performed and embodied rhetorics to Cherokee survival and resistance and argues for performance as a primary site of Native cultural continuance and rhetorical production. Two historiographic studies are central to making this argument. The first, Indian In The Archive: Performance Historiography as Cherokee Ghost Dance (Chapter Three) looks to the Cherokee Ghost Dance and the Redbird Smith movement as models for radical, decolonial, performative historiography. With a particular focus on recovering a history of nineteenth century Cherokee theatre, this chapter focuses on how archives are and can be used by Cherokee people to re-establish dormant and/or obscured Cherokee performance traditions and histories. The second study, On The Wings Of Wadaduga: Towards the Performance of Two-Spirit Critiques (Chapter Four) focuses on revising both archived and embodied records through the development of an historiographic performance with Two-Spirit, Gay, Lesbian, Bisexual, Transgender, and Queer-identified Cherokees. This chapter examines performance as historiography and argues for performance as a means to revise both archival and embodied cultural memories. Both studies are grounded in the methodological concepts of [special characters omitted] (duyuk'ta, "balance") and [special characters omitted] (gadugi, "cooperative labor") as a way of conceiving decolonial scholarship, practice, and pedagogy within the field of rhetoric and composition"--Abstract.
Show less

Title: Yeast phytase and wheat inositol phosphates
Creator: Nayini, Narsimha Reddy
Date: 1983
Collection: Electronic Theses & Dissertations

Title: Yakshagana Badagatittu Bayalata : a South Indian dance drama
Creator: Ashton-Sikora, Martha Bush
Date: 1972
Collection: Electronic Theses & Dissertations

Title: YOUNG COLLEGE MEN’S BELIEFS ABOUT NONPROFESSIONAL HELP-SEEKING FOR DEPRESSION
Creator: Na, Hana
Date: 2021
Collection: Electronic Theses & Dissertations
Description: Low rates of psychological help seeking among young males with depression havereceived significant research attention. However, most prior studies have focused on why the population seeks or does not seek psychological help from formal/professional sources. The present study examined the beliefs of 193 young male college students to predict their intentions to seek psychological help from friends, the most preferred source of help for this group. The study assessed the constructs of the...
Show moreLow rates of psychological help seeking among young males with depression havereceived significant research attention. However, most prior studies have focused on why the population seeks or does not seek psychological help from formal/professional sources. The present study examined the beliefs of 193 young male college students to predict their intentions to seek psychological help from friends, the most preferred source of help for this group. The study assessed the constructs of the reasoned action approach and their underlying beliefs, taking two possible contributing factors to men’s lower help-seeking into account: masculine ideology and perception of depression as masculine or feminine. Results revealed that intention to seek help from friends for depression was associated only with injunctive and descriptive norms and their underlying beliefs surrounding three referents: friends (injunctive and descriptive), fathers (injunctive only), and other family members (descriptive only). Relevant normative beliefs surrounding those referents were not sensitive to young male college students’ masculine ideology and its interaction with depression perception. These findings, in conjunction with the results of the audience segment analyses indicating the importance of the opinions and behaviors of specific referent groups, suggest that injunctive normative beliefs with father and friend referents and descriptive normative beliefs with friend referents are key beliefs that persuasive health messages should focus more on to promote help-seeking from friends among young male college students with depressive disorders, regardless of their adherence to traditional masculine norms and perception of depression as masculine or feminine.
Show less

Title: Xyloglucan fucosyltransferase : a plant cell wall biosynthetic enzyme
Creator: Perrin, Robyn Michele
Date: 2001
Collection: Electronic Theses & Dissertations

Title: Xyloglucan biosynthesis : identification and characterization of fucosyltransferase and cellulose synthase-like genes
Creator: Zeng, Weiqing
Date: 2004
Collection: Electronic Theses & Dissertations

Title: Xenogenous fertilization of cryopreserved golden hamster and squirrel monkey ova
Creator: DeMayo, Francesco John
Date: 1983
Collection: Electronic Theses & Dissertations

Title: Xeno-estrogens in the aquatic environment : development and application of in vitro and in vivo bioassays
Creator: Kramer, Vincent J. (Vincent Joseph)
Date: 1996
Collection: Electronic Theses & Dissertations

Title: XRCC4-XLF complexes facilitate DNA double-strand break repair in cells by bridging broken DNA ends
Creator: Roy, Sunetra
Date: 2015
Collection: Electronic Theses & Dissertations
Description: The classical non-homologous end-joining (c-NHEJ) pathway is largely responsible for repairing DNA double-strand breaks (DSBs) in mammalian cells. Absence of c-NHEJ causes genomic instability in mice and leads to deficiencies in V(D)J recombination. XLF, (the last bona fide c-NHEJ factor discovered) is known to stimulate ligation by the core ligation complex: XRCC4-Ligase 4. However, the precise mechanism by which XLF stimulates XRCC4-Ligase 4 mediated DNA ligation is not well understood....
Show moreThe classical non-homologous end-joining (c-NHEJ) pathway is largely responsible for repairing DNA double-strand breaks (DSBs) in mammalian cells. Absence of c-NHEJ causes genomic instability in mice and leads to deficiencies in V(D)J recombination. XLF, (the last bona fide c-NHEJ factor discovered) is known to stimulate ligation by the core ligation complex: XRCC4-Ligase 4. However, the precise mechanism by which XLF stimulates XRCC4-Ligase 4 mediated DNA ligation is not well understood. Recent structural studies have shown that XLF can interact with XRCC4 to form filaments of alternating XRCC4 and XLF dimers; these filaments mediate DNA end bridging in vitro, providing a potential mechanism by which XLF might stimulate ligation. Here, we show that disrupting the interaction between XRCC4 and XLF by XRCC4 mutation, thereby abolishing filament formation, affects V(D)J recombination in cells and hinders the ability of cells expressing these mutants to survive in response to zeocin, a radiomimetic drug. Furthermore, we characterize an XLF mutant (L115A) that does not interact with XRCC4, and thus does not form filaments or bridge DNA in vitro. However, this mutant is fully sufficient in stimulating ligation of either blunt or cohesive DNA ends by X4/Lig4 in vitro. This separation of function mutant fully complements the zeocin sensitive phenotype and V(D)J recombination deficits of some XLF deficient cell strains but not others, suggesting a variable requirement for DNA bridging in different cell types. To determine whether lack of XRCC4/XLF bridging might be compensated for by other factors, candidate repair factors were disrupted in XLF or XRCC4 deficient cells. Loss of either ATM or the newly described XRCC4/XLF like factor, PAXX accentuates the cellular requirement for XLF. In the case of ATM/XLF loss, the increased cellular requirement can be attributed to its bridging function; however in case of PAXX/XLF loss the increased requirement for XLF is independent of bridging.
Show less

Title: X-ray studies of layer rigidity and c-axis expansion in intercalated layered solids
Creator: Lee, Soonil
Date: 1989
Collection: Electronic Theses & Dissertations

Title: X-ray imaging of superconducting radio frequency cavities
Creator: Musser, Susan Elizabeth
Date: 2006
Collection: Electronic Theses & Dissertations

Title: X-ray crystallographic studies of mutants of cellular retinoic acid binding protein (II) toward designing a mimic of rhodopsin
Creator: Vaezeslami, Soheila
Date: 2006
Collection: Electronic Theses & Dissertations

Title: X-ray crystallographic studies of cytochrome c oxidase from Rhodobacter sphaeroides
Creator: Qin, Ling
Date: 2005
Collection: Electronic Theses & Dissertations

Title: X-ray crystallographic studies of cellular retinoic acid-binding protein II mutants designed as rhodopsin mimics
Creator: Jia, Xiaofei
Date: 2008
Collection: Electronic Theses & Dissertations

Title: X-ray crystallographic studies of branching enzyme/polysaccharide complex and RNA polymerase III transcription facotor TFIIIB complex
Creator: Feng, Lei
Date: 2009
Collection: Electronic Theses & Dissertations

Title: X-ray crystallographic studies of SNAP190RcRd (Small Nuclear RNA Activating Protein) complex and E. Coli glycogen synthase
Creator: Sheng, Fang
Date: 2008
Collection: Electronic Theses & Dissertations

Title: X-ray crystallographic studies of RNA polymerase III transcription factor TFIIIB and 1L-myo-inositol 1-phosphate synthase
Creator: Jin, Xiangshu
Date: 2002
Collection: Electronic Theses & Dissertations

Title: X-ray crystallographic studies of MIP synthase
Creator: Stein, Adam Joshua
Date: 2002
Collection: Electronic Theses & Dissertations

Title: X-ray crystallographic studies of Escherichia coli branching enzyme in complex with maltooctaose and rice branching enzyme I in complex with dodecaose
Creator: Fawaz, Remie
Date: 2016
Collection: Electronic Theses & Dissertations
Description: ABSTRACTX-RAY CRYSTALLOGRAPHIC STUDIES OF ESCHERICHIA COLI BRANCHING ENZYME IN COMPLEX WITH MALTOOCTAOSE AND RICE BRANCHING ENZYME I IN COMPLEX WITH DODECAOSEByRemie FawazBranching enzyme plays a key role in determining the final structure of glycogen or starch; this outcome structure is unique to every species, therefore the diversity of branching enzymes structures. While the biosynthesis of the polymers constitutes of three major steps, the last reaction of the pathway catalyzed by...
Show moreABSTRACTX-RAY CRYSTALLOGRAPHIC STUDIES OF ESCHERICHIA COLI BRANCHING ENZYME IN COMPLEX WITH MALTOOCTAOSE AND RICE BRANCHING ENZYME I IN COMPLEX WITH DODECAOSEByRemie FawazBranching enzyme plays a key role in determining the final structure of glycogen or starch; this outcome structure is unique to every species, therefore the diversity of branching enzymes structures. While the biosynthesis of the polymers constitutes of three major steps, the last reaction of the pathway catalyzed by branching enzyme embodies the cleavage of the α-1,4 glycosidic bond and the transfer of the produced oligosaccharide to the specific α-1,6 position creating an α-1,6 branch point. This process results in highly branched polymeric structures, which represent major carbon sources and carbohydrate storage compounds in living organisms, and are essential both in nature and industry. The structure of Escherichia coli glycogen branching enzyme has been solved both in the apo and holo forms. Binding to linear and cyclic oligosaccharides has been studied and showed seven external binding sites, but binding in the active site was not seen. Oligomers longer than previously used were investigated in an attempt to see binding in the catalytic center, only to discover more peripheral binding sites seemingly independent of each other. Examining the binding sites’ locations and sugars’ orientations indicates that these sites probably cooperate together in order to hold the long sugar polymer on the surface of the protein during the branching reaction. Hypotheses regarding the mode of binding between E. coli branching enzyme and the sugar during the reaction, and the roles for key binding sites and residues in the mechanism are proposed.Rice branching enzyme I, a starch branching enzyme, was also previously crystallized and the structure of the truncated version was solved. Binding attempts on this protein showed surface binding sites as well. In an effort to better understand the mechanism of action of this enzyme, we crystallized the protein and soaked it in a 12-unit oligomer, which bound to the enzyme hanging over the active site without reaching into the groove. Two new binding sites were discovered for this protein and the residues involved were identified. There are several hydrogen bonds and aromatic stacking interactions within the binding sties. Hypotheses for the binding mode and reaction mechanism are proposed.In addition, we have worked on ADP-glucose pyrophosphorylases that catalyze the first step in the biosynthesis pathway. The small subunit of the protein expresses as a homotetramer that is highly active. Although the potato tuber form was previously expressed in a collaborating laboratory at extremely small levels, and the protein was crystallized in the inactive form in the Geiger lab, our intensive attempts only succeeded in purifying the protein of interest, but the enzyme would precipitate instead of concentrating.
Show less

MSU Libraries

Digital Repository

Enabled Filters

Pages

Pages

MSU Libraries

Digital Repository

You are here

Search results

Pages

Pages