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Metabolism of diphenylurea by a Marinobacter sp. isolated from a contaminated ephemeral stream bed in the Negev Desert.

FEMS microbiology letters (2002-08-09)
Sebastian R Sørensen, Ziv Arbeli, Jens Aamand, Zeev Ronen
ABSTRACT

A moderate halophilic Marinobacter sp. (designated strain DPUZ) able to metabolize 1,3-diphenylurea (DPU) was isolated from a contaminated ephemeral desert stream bed near an industrial complex in the northern part of the Negev Desert (Israel). Metabolism of DPU was accompanied by a transient accumulation of a metabolite identified as aniline using gas chromatography-mass spectrometry, thus indicating a metabolic pathway involving cleavage of the urea bridge between the phenyl structures. Aniline was further degraded without detection of other metabolites suggesting a complete degradation. Strain DPUZ grows at NaCl concentrations between 0.2 and 2.6 M with an optimum at 0.51 M. It grows at a temperature range between 20 and 40 degrees C with an optimum at 35 degrees C. This is the first study on bacterial metabolism of DPU.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
1,3-Diphenylurea, 98%

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