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Exploring global and micro-environment conditions for affecting enzyme activities and functional transitions
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Collins, John. Exploring global and micro-environment conditions for affecting enzyme activities and functional transitions. Retrieved from https://doi.org/doi:10.7282/T3RR228P

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TitleExploring global and micro-environment conditions for affecting enzyme activities and functional transitions
NameCollins, John (author); Fu, Jinglin (chair); Zhu, Hao (internal member); Salas-de la Cruz, David (internal member); Rutgers University; Camden Graduate School
Date Created2017
Other Date2017-10 (degree)
SubjectChemistry, Enzymes
Extent1 online resource (x, 101 p. : ill.)
DescriptionThe metabolism of living systems utilize many biosynthetic pathways in order to maintain homeostasis. These metabolic pathways involve multi-step chemical reactions to synthesize molecules and convert energy that are vital to life. These reactions, however, are too slow to support life. Nature has evolved enzymes, which are macromolecular catalysts, to speed up and catalyze these metabolic reactions. Enzymes are very sensitive to their surrounding environment, which can have profound effects on the enzymes function. In this thesis, the effects of different environments on the function of enzymes are explored. First, the effects of an anaerobic environment are shown to add a new catalytic function to an enzyme, allowing an FMN-bound diaphorase to act as a transhydrogenase, transferring a hydride between two critically important metabolic cofactors, NAD and NADP. Second, the effects of the storage conditions of the enzyme diaphorase are explored, and how its catalytic function changes from a dehydrogenase to that of an oxidase due to do partial unfolding of the enzyme during prolonged storage. Third, a DNA-crowded enzyme complex was developed to increase the local molecular crowding for affecting enzyme functions. The DNA-crowded enzyme nanoparticles are made by directly growing double-strand DNA on the enzymes surface via the hybridization chain reaction. The experimental results show that enzymes become more active and stable under a local DNA-crowded nano-environment.
NoteM.S.
NoteIncludes bibliographical references
Noteby John Collins
Genretheses
Persistent URLhttps://doi.org/doi:10.7282/T3RR228P
Languageeng
CollectionCamden Graduate School Electronic Theses and Dissertations
Organization NameRutgers, The State University of New Jersey
RightsThe author owns the copyright to this work.
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