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  • cleave
  • 1,2-CTD uses Fe3+ as a cofactor to cleave the carbon-carbon bond between the phenolic hydroxyl groups of catechol, thus yielding muconic acid as its product. (wikipedia.org)
  • In contrast, 2,3-CTD utilizes Fe2+ as a cofactor to cleave the carbon-carbon bond adjacent to the phenolic hydroxyl groups of catechol, thus yielding 2-hydroxymuconaldehye as its product. (wikipedia.org)
  • The gene cluster to KT2442 confers on this strain the ability to ROBO4 grow on 3-chlorobenzoate (3-CBA) (41), and (iii) the chlorocatechol 1,2-dioxygenase TcbC possesses the ability to cleave di- and tri- as well as monochlorinated catechols (39), potentially permitting the mineralization of multiply chlorinated aromatics. (globaltechbiz.com)
  • extradiol
  • Extradiol members utilize ferrous iron as the active redox state, and this center is commonly coordinated octahedrally through a 2-His-1-Glu motif with labile water ligands occupying empty positions. (wikipedia.org)
  • hydroxylation
  • Catechol is produced industrially by the hydroxylation of phenol using hydrogen peroxide. (wikipedia.org)
  • C6H5OH + H2O2 → C6H4(OH)2 + H2O Previously, it was produced by hydroxylation of salicylaldehyde using hydrogen peroxide, as well as the hydrolysis of 2-substituted phenols, especially 2-chlorophenol, with hot aqueous solutions containing alkali metal hydroxides. (wikipedia.org)
  • Methyl
  • Its methyl ether derivative, guaiacol, converts to catechol via hydrolysis of the CH3-O bond as promoted by hydriodic acid. (wikipedia.org)
  • metabolism
  • Metabolism of 4-amino-3-hydroxybenzoic acid by Bordetella sp. (wikipedia.org)
  • Moreover, in the presence of naproxen activity of gentisate 1,2-dioxygenase, enzyme engaged in 4-hydroxybenzoate metabolism, was completely inhibited. (pjmonline.org)
  • Catechols such as DHSA are produced through the metabolism of cholesterol by bacteria such as Mycobacterium tuberculosis. (wikipedia.org)
  • oxidation
  • The dioxygenases (EC 1.13.11) catalyze the oxidation of a substrate without the reduction of one oxygen atom from dioxygen into a water molecule. (wikipedia.org)
  • For instance, carbon-carbon bond cleavage, fatty acid hydroperoxidation, carbon-sulfur bond cleavage, and thiol oxidation are all reactions catalyzed by mononuclear iron dioxygenases. (wikipedia.org)
  • derivatives
  • Upon mixing the enzyme with the substrate and exposure to oxygen (as when a potato or apple is cut and left out), the colorless catechol oxidizes to reddish-brown melanoid pigments, derivatives of benzoquinone. (wikipedia.org)
  • Flavan-3-ols (sometimes referred to as flavanols) are derivatives of flavans that use the 2-phenyl-3,4-dihydro-2H-chromen-3-ol skeleton. (wikipedia.org)
  • toxic
  • In 2010, the Lethbridge iGEM team confirmed that xylE when introduce to E. coli hydrolyzes catechol to 2-HMS demonstrating and that this critical step can successfully be performed to convert toxic chemicals to metabolic intermediates 7 . (igem.org)
  • Hexahydro-1,3,5-trinitro-1,3,5-triazine and its degradation products are toxic, mutagenic and carcinogenic to humans and other biological systems. (brenda-enzymes.org)
  • Diagram
  • The single-molecule (monomer) catechin, or isomer epicatechin (see diagram), adds four hydroxyls to flavan-3-ol, making building blocks for concatenated polymers (proanthocyanidins) and higher order polymers (anthocyanidins). (wikipedia.org)
  • acids
  • ii) Hemicellulose is a composite compound with a mixture of pentoses, hexoses and sugar acids [ 3 - 6 ]. (ijbs.com)
  • For protein detection, it is advantageous to use fluorescent labels containing chromophores which have longer excitation wavelength and emission wavelength than the aromatic amino acids. (wikipedia.org)
  • occur
  • 2014). It is suggested that the transformation of naproxen by Trametes versicolor or activated sludge may occur by 2-(6-hydroxynaphthalen-2-yl)propanoic acid and 1-(6-methoxynaphthalen-2-yl)ethanone formation (Quintana et al . (pjmonline.org)
  • Catechol has since been shown to occur in free-form naturally in kino and in beechwood tar. (wikipedia.org)
  • Small amounts of catechol occur naturally in fruits and vegetables, along with the enzyme polyphenol oxidase (also known as catecholase, or catechol oxidase). (wikipedia.org)
  • These allow Claisen-like reactions to occur, generating aromatic rings. (wikipedia.org)
  • widely
  • hexahydro-1,3,5-trinitro-1,3,5-triazine is widely used for military and commercial purposes due to its high explosive properties. (brenda-enzymes.org)
  • Catechol is the conjugate acid of a chelating agent used widely in coordination chemistry. (wikipedia.org)
  • Catechol moieties are also found widely within the natural world. (wikipedia.org)
  • In recent years, 2-D electrophoresis has been widely accepted as a standard procedure to separate complex protein mixtures in proteome studies (Proteomics). (wikipedia.org)
  • skeleton
  • Catecholamines are biochemically significant hormones/neurotransmitters that are phenethylamines in which the phenyl group has a catechol skeleton structure. (wikipedia.org)
  • typically
  • Three lithologic units along basement Hole U1383C were found, which typically hosted ∼10 4 cells cm -3 of basaltic rock, with higher cell densities occurring between 115 and 145 m below seafloor. (frontiersin.org)
  • reactions
  • Despite this common oxygenation event, the mononuclear iron dioxygenases are diverse in how dioxygen activation is used to promote certain chemical reactions. (wikipedia.org)
  • compound
  • Lignin is a complex polyphenyl aromatic compound which exists in tight associations with cellulose and hemicellulose to form plant primary and secondary cell wall. (ijbs.com)
  • Tetrasodium tris(bathophenanthroline disulfonate)ruthenium(II) (Na4Ru(bps)3) is a coordination compound containing a ruthenium center. (wikipedia.org)
  • carbon and energy
  • Following buy Aztreonam conjugation of the minitransposon into KT2442, acquisition of the ability to use 3-CBA like a only source of carbon and energy was monitored, and selected transconjugants were analyzed in detail. (globaltechbiz.com)