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. 1994 Dec;60(12):4587–4591. doi: 10.1128/aem.60.12.4587-4591.1994

Pseudomonas sp. strain HBP1 Prp degrades 2-isopropylphenol (ortho-cumenol) via meta cleavage.

F Reichlin 1, H P Kohler 1
PMCID: PMC202024  PMID: 7811094

Abstract

Pseudomonas sp. strain HBP1 Prp grew on 2-isopropylphenol as the sole carbon and energy source with a maximal specific growth rate of 0.14 h-1 and transient accumulation of isobutyric acid. Oxygen uptake experiments with resting cells and enzyme assays with crude-cell extracts showed that 2-isopropylphenol was catabolized via a broad-spectrum meta cleavage pathway. These findings were confirmed by experiments with partially purified enzymes. Identification of 3-isopropylcatechol and 2-hydroxy-6-oxo-7-methylocta-2,4-dienoic acid as the products of the initial monooxygenase reaction and the subsequent extradiol ring cleavage dioxygenase reaction, respectively, was based on gas chromatography-mass spectrometry analysis of the corresponding trimethylsilyl derivatives. The meta cleavage product hydrolase hydrolyzed 2-hydroxy-6-oxo-7-methylocta-2,4-dienoic acid (meta cleavage product of 2-isopropylphenol) to isobutyric acid and 2-hydroxypent-2,4-dienoic acid.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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