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首页> 外文期刊>Applied Microbiology and Biotechnology >Cometabolic ring fission of dibenzofuran by Gram-negative and Gram-positive biphenyl-utilizing bacteria
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Cometabolic ring fission of dibenzofuran by Gram-negative and Gram-positive biphenyl-utilizing bacteria

机译：革兰氏阴性和革兰氏阳性联苯利用细菌对二苯并呋喃的新陈代谢环裂变

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Thirty-five strains of soil bacteria were grown with biphenyl (BP) and tested for their capacity to cooxidize dibenzofuran (131317). During metabolism of DBF, the culture medium of 17 strains changed from colorless to orange, indicating a meta-cleavage pathway of DBF degradation. The ring cleavage product of these isolates was shown to be 2-hydroxy-4-(3'-oxo-3'H-benzofuran-2-yliden)but-2-enoic acid (HOBB). The strain SBUG 271, studied in detail and identified as Rhodococcus erythropolis, degraded DBF via 1,2-dihydroxydibenzofuran. The ensuing meta-cleavage yielded HOBB and salicylic acid, In addition, the four monohydroxylated monomers of DBF and two metabolites. which were not further characterized, were detected. Thus. our results demonstrate that the metabolic mechanism involves lateral dioxygenation of DBF followed by meta-cleavage and occurs in Gram-negative as well as in Gram-positive BP-degrading bacteria. [References: 28]
机译：用联苯（BP）培养了35个土壤细菌菌株，并测试了它们共氧化二苯并呋喃的能力（131317）。在DBF代谢过程中，17个菌株的培养基从无色变为橙色，表明DBF降解的元裂解途径。这些分离物的环裂解产物显示为2-羟基-4-（3'-氧代-3'H-苯并呋喃-2-yliden）丁-2-烯酸（HOBB）。 SBUG 271菌株经过详细研究并鉴定为红球菌，通过1，2-二羟基二苯并呋喃降解了DBF。随后的代谢裂解产生了HOBB和水杨酸。此外，DBF的四种单羟基化单体和两种代谢物。检测到未进一步表征的特征。从而。我们的结果表明，代谢机制涉及DBF的横向双加氧，然后进行元切割，并发生在革兰氏阴性和革兰氏阳性BP降解细菌中。 [参考：28]

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