在产甲烷条件下，厌氧菌群对邻甲酚的羧化作用。
Carboxylation of o-cresol by an anaerobic consortium under methanogenic conditions.
作者信息
Bisaillon J G, Lépine F, Beaudet R, Sylvestre M
机构信息
Centre de Recherche en Microbiologie Appliquée, Institut Armand-Frappier, Québec, Canada.
出版信息
Appl Environ Microbiol. 1991 Aug;57(8):2131-4. doi: 10.1128/aem.57.8.2131-2134.1991.
Abstract
The metabolism of o-cresol under methanogenic conditions by an anaerobic consortium known to carboxylate phenol to benzoate was investigated. After incubation with the consortium at 29 degrees C for 59 days, o-cresol was transformed to 3-methylbenzoic acid, which was not further metabolized by the consortium. Proteose peptone in the culture medium was essential for the transformation of o-cresol. In addition, a transient compound detected in the culture was identified as 4-hydroxy-3-methylbenzoic acid. o-Cresol-6d was transformed by the consortium to deuterated hydroxy-methylbenzoic acid and deuterated methylbenzoic acid. These results demonstrate that o-cresol is carboxylated in the para position relative to the phenolic hydroxyl group and dehydroxylated by the anaerobic consortium.
摘要
研究了一种已知能将苯酚羧化为苯甲酸盐的厌氧菌群在产甲烷条件下对邻甲酚的代谢情况。在29℃下与该菌群孵育59天后，邻甲酚转化为3 - 甲基苯甲酸，该菌群不再进一步代谢3 - 甲基苯甲酸。培养基中的蛋白胨对邻甲酚的转化至关重要。此外，在培养物中检测到的一种瞬态化合物被鉴定为4 - 羟基 - 3 - 甲基苯甲酸。邻甲酚 - 6d被该菌群转化为氘代羟基 - 甲基苯甲酸和氘代甲基苯甲酸。这些结果表明，邻甲酚在相对于酚羟基的对位被羧化，并被厌氧菌群脱羟基。
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