Search Results - "Davidson, Victor L"
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Protein Control of True, Gated, and Coupled Electron Transfer Reactions
Published in Accounts of chemical research (01-06-2008)“…Electron transfer (ET) through and between proteins is a fundamental biological process. The rates of ET depend upon the thermodynamic driving force, the…”
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2
Diversity of structures, catalytic mechanisms and processes of cofactor biosynthesis of tryptophylquinone-bearing enzymes
Published in Archives of biochemistry and biophysics (15-09-2018)“…Tryptophyquinone-bearing enzymes contain protein-derived cofactors formed by posttranslational modifications of Trp residues. Tryptophan tryptophylquinone…”
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3
Tryptophan-mediated charge-resonance stabilization in the bis-Fe(IV) redox state of MauG
Published in Proceedings of the National Academy of Sciences - PNAS (11-06-2013)“…The diheme enzyme MauG catalyzes posttranslational modifications of a methylamine dehydrogenase precursor protein to generate a tryptophan tryptophylquinone…”
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4
Acoustic Injectors for Drop-On-Demand Serial Femtosecond Crystallography
Published in Structure (London) (05-04-2016)“…X-ray free-electron lasers (XFELs) provide very intense X-ray pulses suitable for macromolecular crystallography. Each X-ray pulse typically lasts for tens of…”
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5
Mechanism of protein oxidative damage that is coupled to long-range electron transfer to high-valent haems
Published in Biochemical journal (15-06-2016)“…In the absence of its substrate, the auto-reduction of the high-valent bis-Fe(IV) state of the dihaem enzyme MauG is coupled to oxidative damage of a…”
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6
Posttranslational biosynthesis of the protein-derived cofactor tryptophan tryptophylquinone
Published in Annual review of biochemistry (01-01-2013)“…Methylamine dehydrogenase (MADH) catalyzes the oxidative deamination of methylamine to formaldehyde and ammonia. Tryptophan tryptophylquinone (TTQ) is the…”
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7
Structural Determinants of the Specific Activities of an L-Amino Acid Oxidase from Pseudoalteromonas luteoviolacea CPMOR-1 with Broad Substrate Specificity
Published in Molecules (Basel, Switzerland) (24-07-2022)“…The Pseudoalteromonas luteoviolacea strain CPMOR-1 expresses a flavin adenine dinucleotide (FAD)-dependent L-amino acid oxidase (LAAO) with broad substrate…”
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8
Roles of Conserved Residues of the Glycine Oxidase GoxA in Controlling Activity, Cooperativity, Subunit Composition, and Cysteine Tryptophylquinone Biosynthesis
Published in The Journal of biological chemistry (28-10-2016)“…GoxA is a glycine oxidase that possesses a cysteine tryptophylquinone (CTQ) cofactor that is formed by posttranslational modifications that are catalyzed by a…”
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9
Cupredoxins--a study of how proteins may evolve to use metals for bioenergetic processes
Published in Metallomics (01-02-2011)“…Cupredoxins are small proteins that contain type I copper centers, which are ubiquitous in nature. They function as electron transfer shuttles between…”
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10
Structure and Enzymatic Properties of an Unusual Cysteine Tryptophylquinone-Dependent Glycine Oxidase from Pseudoalteromonas luteoviolacea
Published in Biochemistry (Easton) (20-02-2018)“…Glycine oxidase from Pseudoalteromonas luteoviolacea (PlGoxA) is a cysteine tryptophylquinone (CTQ)-dependent enzyme. Sequence analysis and phylogenetic…”
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11
In Crystallo Posttranslational Modification Within a MauG/Pre-Methylamine Dehydrogenase Complex
Published in Science (American Association for the Advancement of Science) (12-03-2010)“…MauG is a diheme enzyme responsible for the posttranslational modification of two tryptophan residues to form the tryptophan tryptophylquinone (TTQ) cofactor…”
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12
Converting the bis-FeIV state of the diheme enzyme MauG to Compound I decreases the reorganization energy for electron transfer
Published in Biochemical journal (01-01-2016)“…The electron transfer (ET) properties of two types of high-valent hemes were studied within the same protein matrix; the bis-Fe(IV) state of MauG and the…”
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13
Roles of Copper and a Conserved Aspartic Acid in the Autocatalytic Hydroxylation of a Specific Tryptophan Residue during Cysteine Tryptophylquinone Biogenesis
Published in Biochemistry (Easton) (21-02-2017)“…The first posttranslational modification step in the biosynthesis of the tryptophan-derived quinone cofactors is the autocatalytic hydroxylation of a specific…”
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14
Mutagenesis of tryptophan199 suggests that hopping is required for MauG-dependent tryptophan tryptophylquinone biosynthesis
Published in Proceedings of the National Academy of Sciences - PNAS (11-10-2011)“…The diheme enzyme MauG catalyzes the posttranslational modification of the precursor protein of methylamine dehydrogenase (preMADH) to complete biosynthesis of…”
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15
Protein-Derived Cofactors. Expanding the Scope of Post-Translational Modifications
Published in Biochemistry (Easton) (08-05-2007)“…Recent advances in enzymology, structural biology, and protein chemistry have extended the scope of the field of cofactor-dependent enzyme catalysis. It has…”
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Tryptophan tryptophylquinone biosynthesis: A radical approach to posttranslational modification
Published in Biochimica et biophysica acta (01-11-2012)“…Protein-derived cofactors are formed by irreversible covalent posttranslational modification of amino acid residues. An example is tryptophan tryptophylquinone…”
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Diradical intermediate within the context of tryptophan tryptophylquinone biosynthesis
Published in Proceedings of the National Academy of Sciences - PNAS (19-03-2013)“…Despite the importance of tryptophan (Trp) radicals in biology, very few radicals have been trapped and characterized in a physiologically meaningful context…”
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18
A Catalytic Di-Heme bis-Fe(IV) Intermediate, Alternative to an Fe(IV)=O Porphyrin Radical
Published in Proceedings of the National Academy of Sciences - PNAS (24-06-2008)“…High-valent iron species are powerful oxidizing agents in chemical and biological catalysis. The best characterized form of an Fe(V) equivalent described in…”
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19
Protein-Derived Cofactors Revisited: Empowering Amino Acid Residues with New Functions
Published in Biochemistry (Easton) (05-06-2018)“…A protein-derived cofactor is a catalytic or redox-active site in a protein that is formed by post-translational modification of one or more amino acid…”
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Roles of multiple-proton transfer pathways and proton-coupled electron transfer in the reactivity of the bis-FeIV state of MauG
Published in Proceedings of the National Academy of Sciences - PNAS (01-09-2015)“…The high-valent state of the diheme enzyme MauG exhibits charge-resonance (CR) stabilization in which the major species is a bis-Fe(IV) state with one heme…”
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