Aromatic-degrading Sphingomonas isolates from the deep subsurface

Article Abstract:

The strain F199 and five other strains of the aerobic chemoheterotrophic bacteria found in the American Southeast Coastal Plain subsurface sediments have been included in the genus Sphingomonas on the basis of their 16S rRNA sequence and the presence of shingolipids. Although these strains resemble S. capsulata, differences in the 16S rRNA sequences and the lipid composition suggest that these strains belong to a new species. Except for strain B0477, all the other strains can degrade many aromatic compounds including both toluene and napthalene.

Research, Soil microbiology

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Production of the gram-positive Sarcina ventriculi pyruvate decarboxylase in Escherichia coli

Article Abstract:

Research demonstrates the cloning for the first time of the pdc gene, encoding pyruvate decarboxylase, from Sarcina ventriculi in Escherichia coli. Data indicate that pdc gene codes for a homo-tetramer of 58 kilodalton subunits of the enzyme.

Enzymes, Gene expression, Enzyme synthesis

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Phylogenetic and physiological diversity of Arthrobacter strains from unconsolidated subsurface sediments

Article Abstract:

Research shows that the Gram-positive, heterotrophic bacteria from subsurface sediments show similarities with those of Arthrobacter genus as revealed by biochemical, genetic, and morphological traits.

Environmental aspects, Genetic aspects, Microbial ecology, Biological diversity, Biodiversity

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