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Dunn MF, Wei T, Zuckermann RN, Scott TF. Aqueous dynamic covalent assembly of molecular ladders and grids bearing boronate ester rungs. Polym Chem 2019. [DOI: 10.1039/c8py01705k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mimicking the self-assembly of nucleic acid sequences into double-stranded molecular ladders that incorporate hydrogen bond-based rungs, dynamic covalent interactions enable the fabrication of molecular ladder and grid structures with covalent bond-based rungs.
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Affiliation(s)
- Megan F. Dunn
- Department of Chemical Engineering
- University of Michigan
- Ann Arbor
- USA
| | - Tao Wei
- Department of Chemical Engineering
- University of Michigan
- Ann Arbor
- USA
| | | | - Timothy F. Scott
- Department of Chemical Engineering
- University of Michigan
- Ann Arbor
- USA
- Macromolecular Science and Engineering
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Structure Elucidation and Botanical Characterization of Diterpenes from a Specific Type of Bee Glue. Molecules 2017; 22:molecules22071185. [PMID: 28708125 PMCID: PMC6152305 DOI: 10.3390/molecules22071185] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 07/12/2017] [Accepted: 07/12/2017] [Indexed: 01/26/2023] Open
Abstract
Investigation of the single plant source bee glue type originating from Southern Australia resulted in the isolation and structure elucidation of major serrulatane diterpenes, novel 7,8,18-trihydroxyserrulat-14-ene (1), along with its oxidized product, 5,18-epoxyserrulat-14-en-7,8-dione (3) and known (18RS)-5,18-epoxyserrulat-14-en-8,18-diol (2). Exploration into the botanical origin revealed Myoporum insulare R. Br, as the plant source of the bee glue materials. This discovery was made through comparative analysis of the myoporum bee glue samples collected from the beehives, analyses of plant resinous exudate, and resin carried on the hind legs of bees foraging for bee glue.
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Prosser JA, Speir TW, Stott DE. Soil Oxidoreductases and FDA Hydrolysis. SSSA BOOK SERIES 2015. [DOI: 10.2136/sssabookser9.c6] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | - Tom W. Speir
- ESR Ltd.; 34 Kenepuru Dr. Porirua 5240 New Zealand
| | - Diane E. Stott
- USDA-ARS, National Soil Erosion Research Laboratory; 275 S. Russell St. West Lafayette IN 47907
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ElSohly AM, Francis MB. Development of oxidative coupling strategies for site-selective protein modification. Acc Chem Res 2015; 48:1971-8. [PMID: 26057118 DOI: 10.1021/acs.accounts.5b00139] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
As the need to prepare ever more complex but well-defined materials has increased, a similar need for reliable synthetic strategies to access them has arisen. Accordingly, recent years have seen a steep increase in the development of reactions that can proceed under mild conditions, in aqueous environments, and with low concentrations of reactants. To enable the preparation of well-defined biomolecular materials with novel functional properties, our laboratory has a continuing interest in developing new bioconjugation reactions. A particular area of focus has been the development of oxidative reactions to perform rapid site- and chemoselective couplings of electron rich aromatic species with both unnatural and canonical amino acid residues. This Account details the evolution of oxidative coupling reactions in our laboratory, from initial concepts to highly efficient reactions, focusing on the practical aspects of performing and developing reactions of this type. We begin by discussing our rationale for choosing an oxidative coupling approach to bioconjugation, highlighting many of the benefits that such strategies provide. In addition, we discuss the general workflow we have adopted to discover protein modification reactions directly in aqueous media with biologically relevant substrates. We then review our early explorations of periodate-mediated oxidative couplings between primary anilines and p-phenylenediamine substrates, highlighting the most important lessons that were garnered from these studies. Key mechanistic insights allowed us to develop second-generation reactions between anilines and anisidine derivatives. In addition, we summarize the methods we have used for the introduction of aniline groups onto protein substrates for modification. The development of an efficient and chemoselective coupling of anisidine derivatives with tyrosine residues in the presence of ceric ammonium nitrate is next described. Here, our logic and workflow are used to highlight the challenges and opportunities associated with the optimization of site-selective chemistries that target native amino acids. We close by discussing the most recent reports from our laboratory that have capitalized on the unique reactivity of o-iminoquinone derivatives. We discuss the various oxidants and conditions that can be used to generate these reactive intermediates from appropriate precursors, as well as the product distributions that result. We also describe our work to determine the nature of iminoquinone reactivity with proteins and peptides bearing free N-terminal amino groups. Through this discussion, we hope to facilitate the use of oxidative approaches to protein bioconjugation, as well as inspire the discovery of new reactions for the site-selective modification of biomolecular targets.
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Affiliation(s)
- Adel M. ElSohly
- Department
of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - Matthew B. Francis
- Department
of Chemistry, University of California, Berkeley, California 94720-1460, United States
- The
Molecular Foundry at Lawrence Berkeley National Laboratories, Berkeley, California 94720-1460, United States
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Cloake SJ, Toh HS, Lee PT, Salter C, Johnston C, Compton RG. Anodic stripping voltammetry of silver nanoparticles: aggregation leads to incomplete stripping. ChemistryOpen 2015; 4:22-6. [PMID: 25861566 PMCID: PMC4380949 DOI: 10.1002/open.201402050] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Indexed: 11/18/2022] Open
Abstract
The influence of nanoparticle aggregation on anodic stripping voltammetry is reported. Dopamine-capped silver nanoparticles were chosen as a model system, and melamine was used to induce aggregation in the nanoparticles. Through the anodic stripping of the silver nanoparticles that were aggregated to different extents, it was found that the peak area of the oxidative signal corresponding to the stripping of silver to silver(I) ions decreases with increasing aggregation. Aggregation causes incomplete stripping of the silver nanoparticles. Two possible mechanisms of 'partial oxidation' and 'inactivation' of the nanoparticles are proposed to account for this finding. Aggregation effects must be considered when anodic stripping voltammetry is used for nanoparticle detection and quantification. Hence, drop casting, which is known to lead to aggregation, is not encouraged for preparing electrodes for analytical purposes.
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Affiliation(s)
- Samantha J Cloake
- Physical & Theoretical Chemistry Laboratory, Oxford UniversitySouth Parks Road, Oxford OX1 3QZ (UK)
| | - Her Shuang Toh
- Physical & Theoretical Chemistry Laboratory, Oxford UniversitySouth Parks Road, Oxford OX1 3QZ (UK)
| | - Patricia T Lee
- Physical & Theoretical Chemistry Laboratory, Oxford UniversitySouth Parks Road, Oxford OX1 3QZ (UK)
| | - Chris Salter
- Department of Materials, Oxford UniversityParks Road, Oxford OX1 3PH (UK)
| | - Colin Johnston
- Department of Materials, Oxford UniversityParks Road, Oxford OX1 3PH (UK)
| | - Richard G Compton
- Physical & Theoretical Chemistry Laboratory, Oxford UniversitySouth Parks Road, Oxford OX1 3QZ (UK)
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Obermeyer A, Jarman JB, Francis MB. N-terminal modification of proteins with o-aminophenols. J Am Chem Soc 2014; 136:9572-9. [PMID: 24963951 PMCID: PMC4353012 DOI: 10.1021/ja500728c] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Indexed: 01/10/2023]
Abstract
The synthetic modification of proteins plays an important role in chemical biology and biomaterials science. These fields provide a constant need for chemical tools that can introduce new functionality in specific locations on protein surfaces. In this work, an oxidative strategy is demonstrated for the efficient modification of N-terminal residues on peptides and N-terminal proline residues on proteins. The strategy uses o-aminophenols or o-catechols that are oxidized to active coupling species in situ using potassium ferricyanide. Peptide screening results have revealed that many N-terminal amino acids can participate in this reaction, and that proline residues are particularly reactive. When applied to protein substrates, the reaction shows a stronger requirement for the proline group. Key advantages of the reaction include its fast second-order kinetics and ability to achieve site-selective modification in a single step using low concentrations of reagent. Although free cysteines are also modified by the coupling reaction, they can be protected through disulfide formation and then liberated after N-terminal coupling is complete. This allows access to doubly functionalized bioconjugates that can be difficult to access using other methods.
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Affiliation(s)
- Allie
C. Obermeyer
- Department
of Chemistry, University of California,
Berkeley, Berkeley, California 94720, United States
| | - John B. Jarman
- Department
of Chemistry, University of California,
Berkeley, Berkeley, California 94720, United States
| | - Matthew B. Francis
- Department
of Chemistry, University of California,
Berkeley, Berkeley, California 94720, United States
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
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O'Sullivan WJ. The reaction of creatine kinase with dithiobisnitrobenzoic acid. Formation of derivatives of the enzyme. INTERNATIONAL JOURNAL OF PROTEIN RESEARCH 2009; 3:139-47. [PMID: 4257491 DOI: 10.1111/j.1399-3011.1971.tb01704.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Rizzi GP. The Strecker Degradation of Amino Acids: Newer Avenues for Flavor Formation. FOOD REVIEWS INTERNATIONAL 2008. [DOI: 10.1080/87559120802306058] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Von Yee-Meiler D. Der Einfluß von kontinuierlichen, niedrigen SO2-Begasungen auf den Phenolgehalt und die Phenoloxidase-Aktivität in Blättern einiger Waldbaumarten. ACTA ACUST UNITED AC 2007. [DOI: 10.1111/j.1439-0329.1978.tb00609.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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MASON HS. Comparative biochemistry of the phenolase complex. ADVANCES IN ENZYMOLOGY AND RELATED SUBJECTS OF BIOCHEMISTRY 2006; 16:105-84. [PMID: 14376212 DOI: 10.1002/9780470122617.ch3] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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12
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Rizzi GP. Formation of strecker aldehydes from polyphenol-derived quinones and alpha-amino acids in a nonenzymic model system. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2006; 54:1893-7. [PMID: 16506850 DOI: 10.1021/jf052781z] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Fruits and vegetables contain naturally occurring polyphenolic compounds that can undergo enzyme-catalyzed oxidation during food preparation. Many of these compounds contain catechol (1,2-dihydroxybenzene) moieties that may be transformed into o-quinone derivatives by polyphenoloxidases and molecular oxygen. Secondary reactions of the o-quinones include the Strecker degradation of ambient amino acids to form flavor-important volatile aldehydes. The purpose of this work was to investigate the mechanism of the polyphenol/o-quinone/Strecker degradation sequence in a nonenzymic model system. By using ferricyanide ion as the oxidant in pH 7.17 phosphate buffer at 22 degrees C, caffeic acid, chlorogenic acid, (+) catechin, and (-) epicatechin were caused to react with methionine and phenylalanine to produce Strecker aldehydes methional and phenylacetaldehyde in 0.032-0.42% molar yields (0.7-10 ppm in reaction mixtures). Also, by employing l-proline methyl ester in a reaction with 4-methylcatechol, a key reaction intermediate, 4-(2'-carbomethoxy-1'-pyrrolidinyl)-5-methyl-1,2-benzoquinone (7), was isolated and tentatively identified.
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Affiliation(s)
- George P Rizzi
- Procter & Gamble Company, Winton Hill Business Center, 6300 Center Hill Road, Cincinnati, Ohio 45224, USA.
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13
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Yu M, Hwang J, Deming TJ. Role ofl-3,4-Dihydroxyphenylalanine in Mussel Adhesive Proteins. J Am Chem Soc 1999. [DOI: 10.1021/ja990469y] [Citation(s) in RCA: 520] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sreedhara N, Arumughan C, Narayanan CS. Dehulling of palm kernel of oil palm (Elaeis guineensis) to obtain superior-grade palm kernel flour and oil. J AM OIL CHEM SOC 1992. [DOI: 10.1007/bf02541068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- N. Sreedhara
- ; Regional Research Laboratory; Council of Scientific and Industrial Research; Trivandrum 695 019 India
| | - C. Arumughan
- ; Regional Research Laboratory; Council of Scientific and Industrial Research; Trivandrum 695 019 India
| | - C. S. Narayanan
- ; Regional Research Laboratory; Council of Scientific and Industrial Research; Trivandrum 695 019 India
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Rzepecki LM, Waite JH. A chromogenic assay for catecholoxidases based on the addition of L-proline to quinones. Anal Biochem 1989; 179:375-81. [PMID: 2774185 DOI: 10.1016/0003-2697(89)90148-6] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The coupling reaction between L-proline and the quinone products of the oxidation of various catechols serves as a sensitive assay for catecholoxidases. The chromogenic products, 4-N-prolyl-o-quinones, were unique and stable over the course of the reaction. The spectra of these adducts typically had two absorbance maxima, in the ranges 309-340 and 526-540 nm. Assay conditions in which the oxidation of catechols was rate limiting were developed, and initial rates of reaction, monitored spectrophotometrically at the lambda max of the adducts, showed improved initial linearity when compared with the direct spectrophotometric determination of quinone formation. The molar extinction coefficients (epsilon) of a number of adducts ranged between 5310 and 9630 M-1 cm-1, about five- to sevenfold greater than those of the corresponding quinones. Since 2 mol catechol must be oxidized to their quinones to generate 1 mol of adduct, this assay improves catecholoxidase detection sensitivity by approximately three- to fourfold compared with direct estimation of quinone formation.
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Affiliation(s)
- L M Rzepecki
- College of Marine Studies, University of Delaware, Lewes 19958
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17
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Peter MG. Chemische Modifikation von Biopolymeren durch Chinone und Chinonmethide. Angew Chem Int Ed Engl 1989. [DOI: 10.1002/ange.19891010505] [Citation(s) in RCA: 66] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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19
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Semiquinone anion radicals from addition of amino acids, peptides, and proteins to quinones derived from oxidation of catechols and catecholamines. An ESR spin stabilization study. J Biol Chem 1987. [DOI: 10.1016/s0021-9258(18)60929-9] [Citation(s) in RCA: 130] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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20
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Thomas P, Delincée H, Diehl JF. Thin-layer isoelectric focusing of polyphenoloxidase of Sephadex and its detection by the print technique. Anal Biochem 1978; 88:138-48. [PMID: 100022 DOI: 10.1016/0003-2697(78)90406-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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21
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Pye AE. Activation of prophenoloxidase and inhibition of melanization in the haemolymph of immune Galleria mellonella larvae. ACTA ACUST UNITED AC 1978. [DOI: 10.1016/0020-1790(78)90048-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Omote Y, Komatsu T. Morpholinobenzoquinones: Synthesis and Reactions. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1976. [DOI: 10.1246/bcsj.49.2333] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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23
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Unestam T, Ajaxon R. Phenol oxidation in soft cuticle and blood of crayfish compared with that in other arthropods and activation of the phenol oxidases by fungal and other cell walls. J Invertebr Pathol 1976; 27:287-95. [PMID: 822102 DOI: 10.1016/0022-2011(76)90087-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Weaver RF, Rajagopalan KV, Handler P, Jeffs P, Byrne WL, Rosenthal D. Isolation of -L-glutaminyl 4-hydroxybenzene and -L-glutaminyl 3,4-benzoquinone: a natural sulfhydryl reagent, from sporulating gill tissue of the mushroom Agaricus bisporus. Proc Natl Acad Sci U S A 1970; 67:1050-6. [PMID: 5289001 PMCID: PMC283311 DOI: 10.1073/pnas.67.2.1050] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Early in the development of spores, there appears in gill tissue of the mushroom Agaricus bisporus a red pigment that inhibits mitochondrial respiration. The inhibitor and its immediate precursor were isolated from the mushroom and identified as gamma-L-glutaminyl 3,4-benzoquinone (I) and gamma-L-glutaminyl 4-hydroxybenzene (II), respectively, neither of which had previously been described. II was synthesized chemically and the synthetic material was identical with isolated II in all regards. An enzyme that oxidizes II to I was isolated concurrently. I reacts unusually rapidly, completely, and at low concentration with the sulfhydryl groups of various mitochondrial enzymes, accounting for its originally observed properties. It may also prove of value as a general inhibitor of sulfhydryl-dependent enzymes.
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Yamaguchi M, Henderson HM, Hwang PM, Campbell JD. Effect of oxygen concentration on o-diphenol oxidase activity. Anal Biochem 1969; 32:178-82. [PMID: 4991602 DOI: 10.1016/0003-2697(69)90121-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Pierpoint WS. o-Quinones formed in plant extracts. Their reactions with amino acids and peptides. Biochem J 1969; 112:609-16. [PMID: 4980678 PMCID: PMC1187763 DOI: 10.1042/bj1120609] [Citation(s) in RCA: 162] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
1. The reactions of amino acids and peptides with the o-quinones produced by the enzymic oxidation of chlorogenic acid and caffeic acid have been studied manometrically and spectrophotometrically. 2. Amino acids, except lysine and cysteine, react primarily through their alpha-amino groups to give red or brown products. These reactions, which compete with the polymerization of the quinones, are followed by secondary reactions that may absorb oxygen and give products with other colours. 3. The in-amino group of lysine reacts with the o-quinones in a similar way. The thiol group of cysteine reacts with the quinones, without absorbing oxygen, giving colourless products. 4. Peptides containing cysteine react with the o-quinones through their thiol group. 5. Other peptides, such as glycyl-leucine and leucylglycine, react primarily through their alpha-amino group and the overall reaction resembles that of the N-terminal amino acid except that it is quicker. 6. With some peptides, the secondary reactions differ from those that occur between the o-quinones and the N-terminal amino acids. The colours produced from carnosine resemble those produced from histidine rather than those from beta-alanine, and the reactions of prolylalanine with o-quinones are more complex than those of proline.
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Summers NM. Cuticle sclerotization and blood phenol oxidase in the fiddler crab, Uca pugnax. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY 1967; 23:129-38. [PMID: 4965430 DOI: 10.1016/0010-406x(67)90480-x] [Citation(s) in RCA: 41] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Biehl B. Proteinhydrolyse w�hrend der Kakaofermentation in Abh�ngigkeit von Wechselwirkungen mit Polyphenolen unter anaeroben und aeroben Bedingungen. ACTA ACUST UNITED AC 1967. [DOI: 10.1007/bf01460617] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Chandra P, Read G, Vining LC. Studies on the biosynthesis of volucrisporin. II. Metabolism of some phenylpropanoid compounds by Volucrispora aurantiaca Haskins. CANADIAN JOURNAL OF BIOCHEMISTRY 1966; 44:403-13. [PMID: 5959901 DOI: 10.1139/o66-050] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
DL-Phenyllactic acid-α-14C, DL-phenylserine-α-14C, L-phenylalanine-carboxyl-14C, and shikimic acid-U-14C were incorporated into phenylalanine and tyrosine isolated from mycelial hydrolysates of Volucrispora aurantiaca as well as into volucrisporin. DL-m-Tyrosine-carboxyl-14C was incorporated into volucrisporin but not into the aromatic amino acids. L-Tyrosine-β-14C, cinnamic acid-α-14C, and m-hydroxycinnamic acid-α-14C were metabolized by the fungus but did not serve as precursors of volucrisporin or of mycelial phenylalanine. The results are consistent with the concept of a biosynthetic pathway to volucrisporin via phenylpyruvic and m-hydroxyphenylpyruvic acids. Substantial amounts of each radioactive substrate fed to V. aurantiaca PRL 1952 were incorporated into a brown melanoid pigment.
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Pierpoint WS. The enzymic oxidation of chlorogenic acid and some reactions of the quinone produced. Biochem J 1966; 98:567-80. [PMID: 5941350 PMCID: PMC1264879 DOI: 10.1042/bj0980567] [Citation(s) in RCA: 162] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
1. Partially purified preparations of tobacco-leaf o-diphenol oxidase (o-quinol-oxygen oxidoreductase; EC 1.10.3.1) oxidize chlorogenic acid to brown products, absorbing, on average, 1.6atoms of oxygen/mol. oxidized, and evolving a little carbon dioxide. 2. The effect of benzenesulphinic acid on the oxidation suggests that the first stage is the formation of a quinone; the solution does not go brown, oxygen uptake is restricted to 1 atom/mol. oxidized, and a compound is produced whose composition corresponds to that of a sulphone of the quinone derived from chlorogenic acid. 3. Several other compounds that react with quinones affect the oxidation of chlorogenic acid. The colour of the products formed and the oxygen absorbed in their formation suggest that the quinone formed in the oxidation reacts with these compounds in the same way as do simpler quinones. 4. Some compounds that are often used to prevent the oxidation of polyphenols were tested to see if they act by inhibiting o-diphenol oxidase, by reacting with quinone intermediates, or both. 5. Ascorbate inhibits the enzyme and also reduces the quinone. 6. Potassium ethyl xanthate, diethyldithiocarbamate and cysteine inhibit the enzyme to different extents, and also react with the quinone. The nature of the reaction depends on the relative concentrations of inhibitor and chlorogenic acid. Excess of inhibitor prevents the solution from turning brown and restricts oxygen uptake to 1 atom/mol. of chlorogenic acid oxidized; smaller amounts do not prevent browning and slightly increase oxygen uptake. 7. 2-Mercaptobenzothiazole inhibits the enzyme, and also probably reacts with the quinone; inhibited enzyme is reactivated as if the inhibitor is removed as traces of quinone are produced. 8. Thioglycollate and polyvinylpyrrolidone inhibit the enzyme. Thioglycollate probably reduces the quinone to a small extent.
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The Aminochromes. ADVANCES IN HETEROCYCLIC CHEMISTRY 1965. [DOI: 10.1016/s0065-2725(08)60410-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
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ROHAN TERENCEA. The Precursors of Chocolate Aroma: A Comparative Study of Fermented and Unfermented Cocoa Beans. J Food Sci 1964. [DOI: 10.1111/j.1365-2621.1964.tb01760.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Lissitzky S, Rolland M, Reynaud J, Lasry S. Oxydation de la tyrosine et de peptides ou protéines la contenant par la polyphenoloxydase de champignon. ACTA ACUST UNITED AC 1962. [DOI: 10.1016/0006-3002(62)90450-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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38
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Gordon SA, Paleg LG. Formation of auxin from tryptophan through action of polyphenols. PLANT PHYSIOLOGY 1961; 36:838-45. [PMID: 16655599 PMCID: PMC406229 DOI: 10.1104/pp.36.6.838] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Affiliation(s)
- S A Gordon
- Division of Biological & Medical Research, Argonne National Laboratory, Argonne, Illinois
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ANDERSON AB. Inhibition of alkaline phosphatase by adrenaline and related dihydroxyphenols and quinones. ACTA ACUST UNITED AC 1961; 54:110-4. [PMID: 13861188 DOI: 10.1016/0006-3002(61)90943-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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JACOBSON JS. The brown pigments of autolyzed tobacco leaves. I. Isolation and characterization. Arch Biochem Biophys 1961; 93:580-90. [PMID: 13718603 DOI: 10.1016/s0003-9861(61)80056-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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HEIMANN W, HEINRICH B. Über das Verhalten von Flavonoiden in Oxydationssystemen. Arch Pharm (Weinheim) 1960; 293/65:598-609. [PMID: 14400670 DOI: 10.1002/ardp.19602930605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Nagasawa H, Gutmann H. The Oxidation of o-Aminophenols by Cytochrome c and Cytochrome Oxidase. J Biol Chem 1959. [DOI: 10.1016/s0021-9258(18)70056-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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HESS EH. The polyphenolase of tobacco and its participation in amino acid metabolism. I. Manometric studies. Arch Biochem Biophys 1958; 74:198-208. [PMID: 13522237 DOI: 10.1016/0003-9861(58)90213-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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WADA E, IHIDA M. The enzymic oxidation of chlorogenic and caffeic acids in the presence of nornicotine. Arch Biochem Biophys 1957; 71:393-402. [PMID: 13471042 DOI: 10.1016/0003-9861(57)90050-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Waggoner PE, Dimond AE. Altering the Pigments Produced by Tyrosinase and Ortho-Hydroxyphenols with a Meta-Hydroxyphenol, 4-Chlororesorcinol. PLANT PHYSIOLOGY 1957; 32:240-2. [PMID: 16654985 PMCID: PMC540907 DOI: 10.1104/pp.32.3.240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Affiliation(s)
- P E Waggoner
- DEPARTMENT OF SOILS AND CLIMATOLOGY, CONNECTICUT AGRICULTURAL EXPERIMENT STATION, NEW HAVEN, CONNECTICUT
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STIMULATION BY DINITROPHENOL OF FORMATION OF MELANIN-LIKE SUBSTANCE FROM TYROSINE BY RAT LIVER HOMOGENATES. J Biol Chem 1957. [DOI: 10.1016/s0021-9258(18)64872-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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GLASSMAN E. Tyrosinase-produced quinones and the disappearance of kynurenine in larval extracts of Drosophila melanogaster. Arch Biochem Biophys 1957; 67:74-89. [PMID: 13412121 DOI: 10.1016/0003-9861(57)90246-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Suzuki Y. Some notes on the purple pigment formed by the polyphenolase system in Scopolia japonica. Naturwissenschaften 1957. [DOI: 10.1007/bf00638258] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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