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  • extradiol
  • Catechol dioxygenases are further classified as being "extradiol" or "intradiol," and this distinction is based on mechanistic differences in the reactions (figures 1 & 2). (wikipedia.org)
  • 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)
  • 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)
  • strain
  • The 16S rDNA analysis revealed 99% nucleotide similarity to that of the type strain of R.rhodochrous (Fig. 2) ( 10 ). (kenyon.edu)
  • The Sphingomonas macrogolitabida strain TFA is a gram-negative bacterium that is able to grow on tetralin (1,2,3,4-tetrahydronaphthalene) as the only carbon and energy source ( 14 ). (pubmedcentralcanada.ca)
  • 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)
  • 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)
  • Methyl
  • Its methyl ether derivative, guaiacol, converts to catechol via hydrolysis of the CH3-O bond as promoted by hydriodic acid. (wikipedia.org)
  • microorganisms
  • however, some fundamental questions remain, including (1) how much microbial biomass is present in the oceanic crust, (2) where do the microorganisms originate, and (3) what are their metabolic functions. (frontiersin.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)
  • amino
  • 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)
  • 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)
  • 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)
  • Microbiology
  • FEMS Microbiology Ecology, 72 (3), 464−475. (etis.ee)
  • FEMS Microbiology Ecology, 70 (3), 446−455.10.1111/j.1574-6941.2009.00754.x. (etis.ee)
  • 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)
  • 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)
  • 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)
  • ii) Hemicellulose is a composite compound with a mixture of pentoses, hexoses and sugar acids [ 3 - 6 ]. (ijbs.com)
  • Tetrasodium tris(bathophenanthroline disulfonate)ruthenium(II) (Na4Ru(bps)3) is a coordination compound containing a ruthenium center. (wikipedia.org)
  • Abstract
  • Following the abstract, about 3 to 10 key words that will provide indexing references to should be listed. (cjasr.com)
  • coordination
  • At the center this barrel structure is a metal ion, most commonly ferrous iron, whose coordination environment is frequently provided by residues in two partially conserved structural motifs: G(X)5HXH(X)3-4E(X)6G and G(X)5-7PXG(X)2H(X)3N. (wikipedia.org)
  • catechin
  • Catechol was first isolated in 1839 by Edgar Hugo Emil Reinsch (1809 - 1884) by distilling it from the solid tannic preparation catechin, which is the residuum of catechu, the boiled or concentrated juice of Mimosa catechu (Acacia catechu L.f). (wikipedia.org)