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Titolo:
ANAEROBIC DEGRADATION OF M-CRESOL VIA METHYL OXIDATION TO 3-HYDROXYBENZOATE BY A DENITRIFYING BACTERIUM
Autore:
BONTING CFC; SCHNEIDER S; SCHMIDTBERG G; FUCHS G;
Indirizzi:
UNIV ULM,ANGEW MIKROBIOL ABT D-89069 ULM GERMANY UNIV ULM,BIOPHYS ABT,MASSENSPEKTROSKOPIE SECT D-89069 ULM GERMANY INST BIOL 2 D-79104 FREIBURG GERMANY
Titolo Testata:
Archives of microbiology
fascicolo: 1, volume: 164, anno: 1995,
pagine: 63 - 69
SICI:
0302-8933(1995)164:1<63:ADOMVM>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
BENZOYL-COA; METHANOGENIC CONSORTIUM; ENZYMATIC REDUCTION; AROMATIC METABOLISM; PHENOLIC-COMPOUNDS; PURE CULTURES; KEY REACTION; GEN-NOV; TOLUENE; CARBOXYLATION;
Keywords:
CRESOL; ANAEROBIC DEGRADATION; AROMATIC COMPOUNDS; M-CRESOL METHYLHYDROXYLASE; 3-HYDROXYBENZOATE; PSEUDOMONAS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
C.F.C. Bonting et al., "ANAEROBIC DEGRADATION OF M-CRESOL VIA METHYL OXIDATION TO 3-HYDROXYBENZOATE BY A DENITRIFYING BACTERIUM", Archives of microbiology, 164(1), 1995, pp. 63-69

Abstract

The anaerobic degradation of m-cresol was studied in a denitrifying bacterium, In the initial studies, hypothetical intermediates of m-cresol degradation were tested in growth experiments and in adaptation studies with dense cell suspensions. Results suggested a degradation of m-cresol via 3-hydroxybenzoate. To verify this, the degradation of m-cresol was followed in concentrated cell suspensions in the presence of metabolic inhibitors. Fluoroacetate treatment resulted in the transient accumulation of substantial amounts of 3-hydroxybenzoate. In the presence of iodoacetamide, not only was 3-hydroxybenzoate transiently formed, but benzoate was also accumulated. These findings support a degradation of nz-cresol via initial anaerobic methyl oxidation to 3-hydroxybenzoate, followed by reductive dehydroxylation to benzoate or benzoyl-CoA. Studies with extracts of m-cresol-grown cells showed the presence of several enzyme activities to be postulated for this pathway. No evidence was found for a carboxylation, hydroxylation of the aromatic ring, or direct ring reduction as the initial step in m-cresol metabolism.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 10:13:59