Key aromatic-ring-cleaving enzyme, protocatechuate 3,4-dioxygenase, in the ecologically important marine Roseobacter lineage

Article Abstract:

Researchers discovered the aromatic-ring-cleaving enzyme protocatechuate 3,4-dioxygenase in in six Roseobacter isolates. Roseobacter is an abundant alpha-proteobacteria in southeastern estuaries and the presence of this enzyme indicates that the bacterium could be used to degrade aromatic compounds.

Microbial metabolism, Biodegradation

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Diversity of the ring-cleaving dioxygenase gene pcaH in a salt marsh bacterial community

Article Abstract:

Researchers isolated 85 different versions of a ring-cleaving dioxygenase from bacterial communities in a salt marsh. Thirteen of the 53 amino acid residues were common in all versions, indicating a catalytic function. Forty-two percent of the enzymes were not related to any known bacterial enzyme.

Oxidases, Microbial enzymes, Tidal marsh ecology, Salt marsh ecology

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Diverse organization of genes of the beta-ketoadipate pathway in members of the marine Roseobacter lineage

Article Abstract:

The marine Roseobacter lineage provides an ideal system for genetic studies of aromatic compound catabolism. The protocatechuate branch of the beta-ketoadipate pathway in eight Roseobacter group isolates is analyzed.

Science & research, Genetic research, Aromatic compounds, Properties

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