4-Hydroxybenzoate Uptake in an Isolated Soil Acinetobacter sp. |
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| Authors: | José L Allende Alicia Gibello Adelia Fortún Gerardo Mengs Estrella Ferrer Margarita Martín |
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| Institution: | (1) Departamento de Física Aplicada, Facultad de Veterinaria, Universidad Complutense de Madrid, Avda. Puerta de Hierro s/n, 28040 Madrid, Spain , ES;(2) Departamento de Patología Animal y Microbiología, Facultad de Veterinaria, Universidad Complutense de Madrid, Avda. Puerta de Hierro s/n, 28040 Madrid, Spain , ES;(3) Departamento de Bioquímica y Biología Molecular IV, Facultad de Veterinaria, Universidad Complutense de Madrid, Avda. Puerta de Hierro s/n, 28040 Madrid, Spain , ES |
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| Abstract: | The isolated soil bacteria Acinetobacter strain BEM2 is able to utilize some xenobiotic aromatic compounds as a carbon source.
In this study the metabolism of 4-hydroxybenzoate (4-HBA) by strain BEM2 was characterized. Degradation involved a meta-cleavage
pathway yielding 3,4-dihydroxybenzoate (3,4-DHBA) as an intermediate and CO2 as the principal product from the C atoms in the aromatic ring. 4-HBA uptake was studied, and the kinetic parameters were
determined. The uptake was shown to be directly coupled to ATP hydrolysis and its synthesis, according to the Mitchell chemiosmotic
hypothesis.
Received: 29 June 1999 / Accepted: 2 August 1999 |
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