Degradation of phenol via carboxylation to benzoate by a defined, obligate syntrophic consortium of anaerobic bacteria

Knoll, Gertrud; Winter, Josef

doi:10.1007/bf00256225

Cited by 118 publications

(72 citation statements)

References 34 publications

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“…Although the original ethanol-utilizing partner (S Strain) of the co-culture comprising "M. omelianskii" was lost, other syntrophic ethanol-oxidizing bacteria have been isolated (Ben-Bassat et ah, 1981;Schink, 1984). The suite of H 2 -releasing compounds used by syntrophs includes alcohols (Bryant et al, 1967;Eichler and Schink, 1986;Schink et al, 1985), fatty acids (Mclnerney et al, 1981(Mclnerney et al, , 1979Schink, 1985b;Schink and Friedrich, 1994;Zinder and Koch, 1984), aromatic compounds (Doffing and Tiedje, 1991;Elshahed et al, 2001;Knoll and Winter, 1989;Mountfort et al, 1984), glycolic acid (Friedrich et al, 1991), and amino acids (Nagase and Matsuo, 1982;Nanninga and Gottschal, 1985;Stams and Hansen, 1984;Winter et al, 1987).…”

Section: Reactionmentioning

confidence: 99%

Anaerobic Metabolism: Linkages to Trace Gases and Aerobic Processes

Megonigal¹,

Hines²,

Visscher³

2014

Treatise on Geochemistry

128

164

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Section: Reactionmentioning

confidence: 99%

Anaerobic Metabolism: Linkages to Trace Gases and Aerobic Processes

Megonigal¹,

Hines²,

Visscher³

2014

Treatise on Geochemistry

128

164

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“…The sulfate-reducers employ reactions like those detected in denitrifying bacteria, photo trophic bacteria, and methanogenic co-cultures using aromatic compounds [265][266][267][268]. The sulfate-reducing bacteria are capable of carrying out the following reactions: activation of benzoate to benzoyl CoA [269,270], caroboxylation of phenol to 4-hydroxybenzoate [271,272], or the reductive removal of hydroxyl groups [273].…”

Section: Sulfate-reducing Bacteriamentioning

confidence: 99%

Soils contaminated with explosives: Environmental fate and evaluation of state-of-the-art remediation processes (IUPAC Technical Report)

Kalderis

Juhasz

Boopathy

et al. 2011

Pure and Applied Chemistry

154

143

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An explosion occurs when a large amount of energy is suddenly released. This energy may come from an over-pressurized steam boiler, from the products of a chemical reaction involving explosive materials, or from a nuclear reaction that is uncontrolled. In order for an explosion to occur, there must be a local accumulation of energy at the site of the explosion, which is suddenly released. This release of energy can be dissipated as blast waves, propulsion of debris, or by the emission of thermal and ionizing radiation.Modern explosives or energetic materials are nitrogen-containing organic compounds with the potential for self-oxidation to small gaseous molecules (N 2 , H 2 O, and CO 2 ). Explosives are classified as primary or secondary based on their susceptibility of initiation. Primary explosives are highly susceptible to initiation and are often used to ignite secondary explosives, such as TNT (2,4,6-trinitrotoluene), RDX (1,3,5-trinitroperhydro-1,3,5-triazine), HMX (1,3,5,7-tetranitro-1,3,5,7-tetrazocane), and tetryl (N-methyl-N-2,4,6-tetranitroaniline).

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“…Although the anaerobic degradation of aromatic compounds is not well defined, recent studies have shown that carboxylation (13,18,19,36) and decarboxylation (22,32) reactions may play important initiating roles in the usage of aromatic compounds under anaerobic conditions. Given the potential for the acetogen Clostridium thermoaceticum to derive growth-essential CO2 equivalents from carboxylated aromatic compounds, it has been proposed that some acetogens may initiate the anaerobic biotransformation of carboxylated aromatic compounds (16).…”

mentioning

confidence: 99%

Expression of an aromatic-dependent decarboxylase which provides growth-essential CO2 equivalents for the acetogenic (Wood) pathway of Clostridium thermoaceticum

1990

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: 1990). By using 4-hydroxybenzoate as a model substrate, an assay was devel9ped to study the expression apd activity of the decarboxylase involved in the activa'tion of aromatic carboxyl groups. The aromatic-dppendent decarboxylase was induced by carboxylated aromatic compounds in the early'stages of'growth and was not repressed by glucose or. other acetogenic substrates; nonutilizable carboxylated aromatic compounds did not induce the decarboxylase. The decarboxylase activity displayed saturation kinetics at both whole-cell and cell extract levels, was sensitive to oxidation, and was not affected by exogenous energy sources. However, at the whole-cell level, metabolic inhibitors decreased the decarboxylase activity. Supplemental biotin or avidin did not significantly affect decarboxylation. The aromatic-dependent decarboxylase was specific for benzoates with a hydroxyl group in the para position of the aromatic ring; the meta position could bie occupied by various substituent groups (-H, -OH, -OCH3, -Cl, or -F). The carboxyl carbon from [carboxyl-'4C]vaniliate went primarily to 14C02 in short-term decarboxylase assays. During growth, the aromatic carboxyl group went primarily to CO2 under C02-enriched conditions. However, under C02-limited conditions, the aromatic carboxyl carbon went nearly totally to acetate, with equal distribution between the carboxyl and methyl carbons, thus demonstrating that acetate could be totally synthesized from aromatic carboxyl groups. In contrast, when cocultivated (i.e., supplemented) with CO under C02-limited conditions, the aromatic carboxyl group went primarily to the methyl carbon of acetate.

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Degradation of phenol via carboxylation to benzoate by a defined, obligate syntrophic consortium of anaerobic bacteria

Cited by 118 publications

References 34 publications

Anaerobic Metabolism: Linkages to Trace Gases and Aerobic Processes

Anaerobic Metabolism: Linkages to Trace Gases and Aerobic Processes

Soils contaminated with explosives: Environmental fate and evaluation of state-of-the-art remediation processes (IUPAC Technical Report)

Expression of an aromatic-dependent decarboxylase which provides growth-essential CO2 equivalents for the acetogenic (Wood) pathway of Clostridium thermoaceticum

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