alexa Production of aldehyde oxidases by microorganisms and their enzymatic properties.
Microbiology

Microbiology

Fermentation Technology

Author(s): Kazuo Aisaka, Kinya Fujishiro

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In order to establish an efficient process to decompose environmentally toxic aldehydes, dioxygen-dependent aldehyde oxidase (ALOD) from microorganisms was first sought, and some bacteria and actinomycetes were found to produce the enzyme in their cells. Methylobacillus sp., Pseudomonas sp. and Streptomyces moderates were selected as the representative ALOD-producing strains and their enzymes were partially purified and characterized. The three ALODs could oxidize a wide range of aldehydes including formaldehyde, aliphatic aldehydes, and aromatic aldehydes, though their preferences differ depending on their producing strains. The other enzymatic properties were also determined with regard to their producing strains. Methylobacillus sp. ALOD had the most acidic optimum pH for its activity and stability and Pseudomonas sp. ALOD had the highest stability against heat treatment. Three native ALODs had molecular weights ranging from 140 to 148 kDa and were composed of three subunits of different sizes: large (85 to 88 kDa), medium-sized (37 to 39 kDa) and small (18 to 23 kDa).

This article was published in Journal of Bioscience and Bioengineering and referenced in Fermentation Technology

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