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Dissertations / Theses on the topic 'Metalloenzymes'

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1

Wilkinson, Kay W. "Structural studies on metalloenzymes." Thesis, University of Sheffield, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364295.

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2

Obrecht, Lorenz. "Artificial metalloenzymes in catalysis." Thesis, University of St Andrews, 2015. http://hdl.handle.net/10023/7248.

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This thesis describes the synthesis, characterisation and application of artificial metalloenzymes as catalysts. The focus was on two mutants of SCP-2L (SCP-2L A100C and SCP-2L V83C) both of which possess a hydrophobic tunnel in which apolar substrates can accumulate. The crystal structure of SCP-2L A100C was determined and discussed with a special emphasis on its hydrophobic tunnel. The SCP-2L mutants were covalently modified at their unique cysteine with two different N-ligands (phenanthroline or dipicolylamine based) or three different phosphine ligands (all based on triphenylphosphine) in
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3

Alonso, Cotchico Lur. "Computational design of artificial metalloenzymes." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/664006.

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El diseño enzimático es el área basada en el descubrimiento y/o optimización de biomoléculas para el desarrollo de reacciones químicas no naturales. Es un área que se encuentra en su mayor crecimiento y constituye uno de los puntos clave en la transición de la química hacia alternativas más ecológicas. Una manera elegante de sintetizar nuevos biocatalizadores es mediante la inclusión de cofactores organometálicos en estructuras biológicas, dando lugar a lo que se conoce como Metaloenzimas Artificiales (ArMs). Estos híbridos combinan la versatilidad catalítica de los compuestos organometálicos
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4

Jackson, Henry Lee. "Synthetic models of Fe-type nitrile hydratase /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/8532.

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5

Dharmawardena, Priyangi Tikiri Kumari. "Artificial hydrolytic metalloenzymes for ester hydrolysis." Thesis, King's College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322705.

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6

Woollard-Shore, John. "Towards functional models of copper metalloenzymes." Thesis, University of Essex, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364506.

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7

Pinkham, Andrew M. "Oxidative Biocatalysis in Metallotherapeutics and Metalloenzymes." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1534720716721343.

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8

Oshige, Eric Stephen. "Photorelease of caged alcohols from artificial metalloenzymes /." Electronic thesis, 2007. http://etd.wfu.edu/theses/available/etd-06102007-193011/.

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9

Hexter, Suzannah Victoria. "Principles of electrocatalysis by hydrogen activating metalloenzymes." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:60aeee02-a16c-4c86-bf48-61306512fa86.

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Hydrogenases catalyse the interconversion of H<sub>2</sub> and H<sup>+</sup>. Protein Film Electrochemistry (PFE), a technique in which a redox enzyme is adsorbed directly onto an electrode, enables a detailed description of the catalytic function of these metalloenzymes to be obtained. Unlike small-molecule electrocatalysts, the hydrogenase active site is surrounded by a protein structure ensuring that it is relatively unperturbed by the electrode surface. In this thesis, PFE is used alongside mathematical modelling to explain differences between [NiFe]- and [FeFe]-hydrogenases, highlighting s
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10

Dutta, Rinku. "Detection of Metalloenzymes Employing Fluorescentpolymers and Liposomes." Diss., North Dakota State University, 2012. https://hdl.handle.net/10365/26636.

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In the biological systems, proteins are important constituents. Protein-protein interactions play vital roles in physiological environments and any disruption in these interactions lead to adverse effects. However, designing artificial receptor molecules or scaffolds to imitate or replace these endogenous partners could be an avenue for better drug designing and detection tools creation. We are primarily interested in polymer and liposomal systems to detect two crucial metalloenzymes of the living world. Matrix metalloproteinases are zinc-containing endopeptidases which are required for wound
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11

Delhaize, Emmanuel. "Biosynthesis of copper metalloenzymes in subterranean clover." Thesis, Delhaize, Emmanuel (1986) Biosynthesis of copper metalloenzymes in subterranean clover. PhD thesis, Murdoch University, 1986. https://researchrepository.murdoch.edu.au/id/eprint/51718/.

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Subterranean clover (Trifolium subterraneum L. cv. Seaton Park) was grown in solution cultures containing adequate nitrogen both with and without copper. After copper deficiency had developed, Cu2+ was added to some deficient plants and copper content, protein content and activities of three copper met a 11oenzymes, (diamine oxidase DAO; [EC 1.4.3.63, ascorbate oxidase EEC 1.10.3.33 and .o-diphenol oxidase EEC 1.10.3.13), were assayed in young and recently matured leaf blades over 11 days during the development of the next three leaves. Copper deficiency had little effect on protein concen
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12

Wang, Yiduo. "The electrochemistry of metalloenzymes confined in ionic liquids." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:71a7251f-d7c5-49b4-af8b-8c89e128b088.

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Enzymes are superb catalysts with high selectivity and catalytic efficiency. Ionic liquids have negligible volatility, good electric conductivity, and high thermal and chemical stability, which are powerful electrolytes for electrochemical processes. To understand how to apply enzymatic catalysis in ionic liquids to carbon-neutral technologies, this thesis investigates the electrochemical properties of three metalloenzymes that are inspirational catalysts for fuel cells and CO2 reduction in an almost dry condition in ionic liquids, by protein film electrochemistry (PFE). Hydrogenase-1 from Esc
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13

Shearer, Jason Michael. "Synthetic models for metalloenzymes containing sulfur-metal bonds /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/8681.

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14

TIBERTI, MATTEO. "Computational investigation of structure-function relationship in metalloenzymes." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2014. http://hdl.handle.net/10281/53873.

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Important processes such as carbon dioxide capture, hydrogen evolution and oxidation as well as bioremediation are of paramount importance for the development of an environmental-friendly economy. In nature, the reactions underlying these processes are naturally performed by metalloenzymes. The understanding of how they work will ease the development of important technological and biotechnological applications, such as bioinspired inorganic catalysts or more effective enzymes. In the present work, we have used computational methods to study structure-function relationships in metalloenzymes w
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15

Sansone, Assunta. "The role of [CU-ZN]-cofactored superoxide dismutase in salmonella virulence." Thesis, Imperial College London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246768.

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16

Theisen, Roslyn Marie. "Synthetic models and reactivity of sulfur-ligated iron metalloenzymes /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/11585.

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17

Moore, Curtis E. "Modeling the active sites of metalloenzymes with thiolate coordination." Diss., Wichita State University, 2007. http://hdl.handle.net/10057/1492.

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Nitrile Hydratase (NHase) is a bacterial enzyme which catalyzes the hydrolysis of organic nitriles to their corresponding amides. The active site of NHase contains Fe (III) or Co(III) ions in an unusual coordination sphere containing 2 amide N atoms and three S donors. The research described herein is an attempt to model this active site using two different model systems: one that generates metal-coordinated imines, and one that generates metal-coordinated amides. Using 2,2’-dithiodibenzaldehyde and derivatives of 2,2’-dithiodisalicylic acid as reactants, several new and interesting metal coor
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18

Maurer, Richard I. "Modelling metalloenzymes : studies on the mechanism of nitrite reductase." Thesis, University of Essex, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390987.

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19

Popa, Gina. "Development of artificial metalloenzymes via covalent modification of proteins." Thesis, University of St Andrews, 2010. http://hdl.handle.net/10023/1836.

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Development of selective artificial metalloenzymes by combining the biological concepts for selective recognition with those of transition metal catalysis has received much attention during the last decade. Targeting covalent incorporation of organometallic catalysts into proteins, we explored site-selective covalent coupling of phosphane and N–containing ligands. The successful approach for incorporation of phosphane ligands we report herein consists of site-specific covalent coupling of a maleimide functionalized hydrazide into proteins, followed by coupling of aldehyde functionalized phosph
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20

Camberlein, Virgyl. "Target-guided synthesis of metalloenzymes ligands with therapeutic applications." Thesis, Université de Lille (2022-....), 2022. http://www.theses.fr/2022ULILS004.

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La synthèse guidée par la cible de ligands protéiques est une stratégie innovante pour découvrir des composés bioactifs. En particulier, la Kinetic Target-Guided Synthesis (KTGS) and the Dynamic Combinatorial Chemistry (DCC) ont permis, ces dernières années, de découvrir des ligands originaux pour des cibles thérapeutiques mal explorées, ce qui a permis de lancer des projets de découverte de médicaments. Ce projet de thèse vise à utiliser la KTGS pour découvrir, puis optimiser des ligands de deux classes de métalloenzymes que sont les aminopeptidases du réticulum endoplasmiques (ERAP) et l’éla
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21

Moore, Curtis Eugene Eichhorn David M. "Modeling the active sites of metalloenzymes with thiolate coordination /." Diss., A link to full text of this thesis in SOAR, 2007. http://hdl.handle.net/10057/1492.

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22

Deuss, Peter J. "Artificial metalloenzymes : modified proteins as tuneable transition metal catalysts." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/1923.

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This thesis describes the design, synthesis and application of artificial metalloenzymes for transition metal catalysed reactions not performed by natural enzymes. Unique cysteine containing protein templates were covalently modified with transition metal ligand complexes that generate catalytic activity, which allows for the use of virtually any protein template. SCP-2L was selected as template for the linear hydrophobic tunnel that traverses the protein, which has high affinity for linear aliphatic molecules. The use of catalysts based on this protein to induce increased activity in the biph
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23

Arndt, Joseph W. "Characterization and structural determination of metalloenzymes DNA polymerase beta, carboxypeptidase, and acetyl coenzyme-A decarbonylase/synthase /." Columbus, OH : Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1061312369.

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Thesis (Ph. D.)--Ohio State University, 2003.<br>Title from first page of PDF file. Document formatted into pages; contains xxii, 172 p. : ill., some col. Includes abstract and vita. Advisor: Michael K. Chan, Dept. of Chemistry. Includes bibliographical references (p. 165-172).
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24

Snodin, Michael D. "Coordination and biomimetic properties of 12-ane-N←3 ligands." Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337708.

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25

Imsand, Erin M. Ellis Holly R. "Spectroscopic and kinetic investigation of two unusual structural features found in eukaryotic cysteine dioxygenase." Auburn, Ala., 2009. http://hdl.handle.net/10415/2012.

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26

Patil, Vishal. "Design and synthesis of small molecule inhibitors of zinc metalloenzymes." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/45859.

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Histone deacetylases (HDACs) are a class of enzymes that play a crucial role in DNA expression by removing an acetyl group from the ɛ-N-acetyl lysine residue on histone proteins. Out of 18 isoforms of HDAC enzymes which are classified into 4 classes, only 11 of them are metalloenzymes that require zinc for its catalytic activity. HDACs are considered promising target for drug development in cancer and other parasitic diseases due to their role in gene expression. Histone deacetylase inhibitors (HDACi) can cause cell cycle arrest, and induce differentiation or apotosis. While HDACi shows promis
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27

Spencer, Douglas J. E. "Synthetic models for metalloenzymes containing sulfur, nitrogen and oxygen donors." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312054.

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28

Jones, Graham Joseph. "Synthetic analogues of the nickel-iron hydrogenase family of metalloenzymes." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/49928/.

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This thesis describes the syntheses and characterisations of heterobimetallic dithiolate complexes of NiII, PdII and CoII with FeII that derive inspiration from the chemistry and structures of the active sites of the [NiFe] hydrogenase family of metalloenzymes. These studies provide insight into the electronic structures of the Ni-C and Ni-L states of the [NiFe] hydrogenases and the complexes have potential as new catalysts for the production of dihydrogen. Chapter One outlines the role of dihydrogen as a potential fuel and replacement for energy sources derived from fossil fuel feedstocks. Th
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29

Sharma, Mahima. "Design of artificial metalloenzymes for C-C cross-coupling reactions." Thesis, University of Oxford, 2014. https://ora.ox.ac.uk/objects/uuid:8756ddda-60b7-45a6-9590-56eabf11f260.

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Artificial metalloenzymes enable several non-natural chemical transformations by hosting a metal catalyst and providing activating microenvironments to the metal. New strategies to combine the complementary features of enzyme and transition metal catalysis are crucial for exploiting the pre-evolved selectivities of enzymes in chemical synthesis. In order to exploit the inherent selectivity of a serine protease Subtilisin (SBL) for C-C crosscoupling reactions, the interplay of natural substrate binding pockets and the nucleophilic machinery of the enzyme with the metal catalyst was central to o
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30

Lu, Shen. "Characterization of nitrosyl, azido, and carbonyl complexes in diiron enzymes and their implications for O₂ and NO activation /." Full text open access at:, 2005. http://content.ohsu.edu/u?/etd,248.

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31

Taktak, Sonia. "Biomimetic amino-pyridine iron complexes for catalysis and small molecule activation /." Thesis, Connect to Dissertations & Theses @ Tufts University, 2005.

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Thesis (Ph.D.)--Tufts University, 2005.<br>Adviser: Elena V. Rybak-Akimova. Submitted to the Dept. of Chemistry. Includes bibliographical references. Access restricted to members of the Tufts University community. Also available via the World Wide Web;
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32

Patel, Neki Vijay. "Novel fragment library approaches against metalloenzymes and their downstream biological targets." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/39373.

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Rab27a is a small GTPase that is implicated in cancer and other diseases e.g. Griscelli syndrome. Rab27a is post-translationally modified (prenylated) by Rab geranylgeranyltransferase (RGGT), a prenyltransferase (PT). Prenylation is essential for Rab27a's function as a membrane-interacting regulator of vesicular trafficking. A link between Rab27a and matrix metalloproteinases (MMPs), enzymes that degrade extracellular matrix proteins, has been established. PTs and MMPs have also been implicated in disease, and selective inhibition of an enzyme in one of these classes may lead to novel treatmen
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33

Depledge, Nigel William. "Design of inhibitors for two oxygen-requiring metalloenzymes in steroid biosynthesis." Thesis, University of Southampton, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242299.

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34

Chaplin, Amanda K. "Metalloenzymes required for glycan processing and morphological development in Streptomyces lividans." Thesis, University of Essex, 2016. http://repository.essex.ac.uk/16310/.

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Streptomyces are filamentous soil-dwelling bacteria with a complex life cycle. Elucidating the signals that regulate morphological change in microbes is of fundamental importance for biotechnology applications. In the case of Streptomyces a development switch occurs with the concomitant production of secondary metabolites, many of which have pharmaceutical properties. For the industrially used strain S. lividans this switch is dependent on the bioavailability of copper (Cu) in the environment. This thesis has explored the relationship between Cu-chaperones and a haem peroxidase, part of the sc
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35

Salter, Michael H. "The study of models for zinc(II) metalloenzymes in aqueous solution /." Electronic version (PDF), 2003. http://dl.uncw.edu/etd/2003/salterm/michaelsalter.html.

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36

Donati, Elisa <1992&gt. "Computational Investigation of the Molecular Mechanisms Regulating Nucleic Acid Processing Metalloenzymes." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amsdottorato.unibo.it/10119/1/Donati_Elisa_Tesi.pdf.

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Polymerases and nucleases are enzymes processing DNA and RNA. They are involved in crucial processes for cell life by performing the extension and the cleavage of nucleic acid chains during genome replication and maintenance. Additionally, both enzymes are often associated to several diseases, including cancer. In order to catalyze the reaction, most of them operate via the two-metal-ion mechanism. For this, despite showing relevant differences in structure, function and catalytic properties, they share common catalytic elements, which comprise the two catalytic ions and their first-shell acid
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37

Smith, Matthew Charles. "Chemical models of the active sites of metalloenzymes containing nickel and iron." Thesis, University of East Anglia, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268539.

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38

Stenson, Philip A. "Transition metal thiolate complexes : modelling the active sites of sulfur-ligated metalloenzymes." Thesis, University of Nottingham, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.430766.

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39

Bachmeier, Andreas S. J. L. "Metalloenzymes as inspirational electrocatalysts for artificial photosynthesis : from mechanism to model devices." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:eb1e648d-3a55-48ee-bd6e-c3212e65bac0.

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Artificial photosynthesis, an important route towards future supply of renewable energy, seeks to convert sunlight into storable chemical energy such as fuels. Building upon the principles of biological solar energy conversion, artificial photosynthesis can be broken down into four essential processes: harvesting of visible light, charge (electron-hole) separation, oxidation of water to dioxygen, and fuel formation. Importantly, unlike natural photosynthesis, artificial photosynthesis is solely dedicated to efficient formation of fuels and is not restricted by the availability of arable land.
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40

Jablonski, Peter Edward. "Studies on two nickel-containing enzymes from Methanosarcina thermophila TM-1." Diss., This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-07282008-134014/.

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41

Thompson, Maren L. "The role of luxS in Escherichia coli biofilm formation a link between quorum sensing and central metabolism /." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 88 p, 2007. http://proquest.umi.com/pqdlink?did=1251900641&Fmt=7&clientId=79356&RQT=309&VName=PQD.

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42

Hope, Matthew. "Mandelamide hydrolose structural studies of a novel amidase /." Waltham, Mass. : Brandeis University, 2009. http://dcoll.brandeis.edu/handle/10192/23237.

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43

Pérez, Olmo Cristina. "Polar tris(pyrazolyl)borates for the modeling of zinc metalloenzymes in aqueous solution." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=975035436.

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44

Lee, Adrian Y. "Modeling the structure and reactivity of metalloenzymes, dimethylsulfoxide reductase and nickel-iron hydrogenase." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0005/MQ45929.pdf.

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45

Smith, Nicola Jayne. "Structural investigations of mono-, di- and trinuclear transition metal complexes relevant to metalloenzymes." Thesis, University of York, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.444691.

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46

DuBois, Jennifer Lynn Marie. "Application of x-ray absorption spectroscopy to O₂-reactive metalloenzymes and inorganic complexes /." May be available electronically:, 2000. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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47

Georgiev, Valentin. "Reaction Mechanisms of Metalloenzymes and Synthetic Model Complexes Activating Dioxygen a computational study /." Doctoral thesis, Stockholm : Department of Physics, Stockholm University, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-30706.

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Diss. (sammanfattning) Stockholm : Stockholms universitet, 2009.<br>At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 4: In progress, Paper 5: In progress. Härtill 5 uppsatser.
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48

Marchand, Petra. "Structure, membrane association, and processing of meprin subunits." Diss., This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06062008-171918/.

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49

Jain, Rinku. "Insights into the roles of metals in biology biochemical and structural characterization of two bacterial and one archaeal metallo-enzyme /." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1154819208.

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50

Wellington, Kevin Wayne. "Synthetic and analytical studies of biomimetic metal complexes." Thesis, Rhodes University, 2000. http://hdl.handle.net/10962/d1005042.

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Several series of novel diamido, diamino and diimino ligands containing different spacers and heterocyclic donors have been synthesised. The spacers include the flexible biphenyl, the rigid 1,1 O-phenanthroline and various acyclic moieties, while the heterocyclic donors comprise pyridine, imidazole or benzimidazole groups. These ligands have been designed to complex copper and act as biomimetic models of the active site of the enzyme, tyrosinase, and their complexes with copper, cobalt, nickel and platinum have been analysed using microanalytical, IR, UV-Visible and cyclic voltammetric techniq
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