An Aspergillus niger esterase (ferulic acid esterase III) and a recombinant Pseudomonas fluorescens subsp. cellulosa esterase (XylD) release a 5-5' ferulic dehydrodimer (diferulic acid) from barley and wheat cell walls

Article Abstract:

The Aspergillus niger ferulic acid esterase III (FAE-III) and Pseudomonas fluorescens subsp. cellulosa esterase (XylD) hydrolyze barley and wheat cell walls to release (E,E)-4,4'-dihydroxy-5,5'-dimethoxy-3,3'-bicinnamic acid (5-5'diFA). The release of 5-5'diFA increases in the presence of xylanase. Xylanase solubilizes other ferulic acid dimers also, but the esterases release only 5-5'diFA. This is due to either enzyme specificity or substrate accessibility.

Esterases, Aspergillus, Microbial metabolism

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Bioconversion of ferulic acid into vanillic acid by means of a vanillate-negative mutant of Pseudomonas fluorescens strain BF13

Article Abstract:

Research has been conducted on the ferulic-acid-degrading Pseudomonas fluorencens strain. The isolation of the transposon mutant from this strain to bioconvert ferulic acid into vanillic acid has been carried out.

Italy, Gene mutations, Gene mutation, Transposons, Acids

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Lon protease influences antibiotic production and UV tolerance of Pseudomonas fluorescens Pf-5

Article Abstract:

Research has been conducted on the soil bacterium Pseudomonas fluorescens Pf-5. Investigation of serine protease Lon that influences Pf-5 phenotypes as a global regulator has been carried out.

United States, Proteases, Phenotype, Phenotypes, Serine, Pathogenic microorganisms

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