Related Experiment Video
Updated: Jun 2, 2026
10:03
Isolation, Propagation, and Identification of Bacterial Species with Hydrocarbon Metabolizing Properties from Aquatic Habitats
Published on: December 7, 2021
Microbial enzymes for aromatic compound hydroxylation
Patrizia Di Gennaro1, Anna Bargna, Guido Sello
1Department of Biotechnology and Biosciences, University of Milan-Bicocca, Piazza della Scienza 2, Milan, Italy. patrizia.digennaro@unimib.it
Applied Microbiology and Biotechnology
|April 28, 2011
Summary
Redox enzymes catalyze essential oxidation-reduction reactions for life. This review details recent advances in understanding the structural and mechanistic aspects of aromatic hydroxylation by key oxidative enzymes.
Area of Science:
- Biochemistry
- Enzymology
- Microbiology
Background:
- Redox enzymes are vital for cellular energy production and compound transformation.
- Oxidative enzymes, particularly from microorganisms, are crucial for introducing oxygen into aromatic compounds.
- Key enzyme classes include oxygenases/hydroxylases, peroxidases, and laccases, differing in cofactors, metals, and electron transfer.
Purpose of the Study:
- To review recent developments in the field of aromatic hydroxylation.
- To summarize key findings on the structural requirements and mechanisms of aromatic hydroxylation.
- To highlight the biotechnological potential of oxidative enzymes.
Main Methods:
- Literature review of recent studies on redox enzymes.
- Analysis of structural data and mechanistic investigations.
- Focus on enzymes involved in aromatic hydroxylation.
Main Results:
- Detailed examination of oxygenases/hydroxylases, peroxidases, and laccases.
- Elucidation of differences in active site metals, cofactors, and electron transfer mechanisms.
- Summary of recent structural and mechanistic insights into aromatic hydroxylation.
Conclusions:
- Aromatic hydroxylation by redox enzymes is a complex process with diverse mechanisms.
- Understanding these mechanisms is crucial for harnessing enzymes in biotechnology.
- Continued research into enzyme structure and function will drive innovation.
Related Concept Videos
01:25Aromatic Compounds: Overview
In general, the term ‘aromatic’ indicates a pleasant smell or fragrance from fresh flowers, freshly prepared coffee, etc. In the early history of organic chemistry, many benzene derivatives were isolated from the pleasant odor oils of the plants. For example, vanillin was isolated from the oil of vanilla, methyl salicylate from the oil of wintergreen, and cinnamaldehyde from the oil of cinnamon. They all had a pleasant odor; hence the name aromatic was given.
In 1825, Faraday isolated benzene...
In 1825, Faraday isolated benzene...
01:19Phase I Reactions: Oxidation of Aliphatic and Aromatic Carbon-Containing Systems
Phase I biotransformation reactions are integral to drug metabolism, predominantly involving oxidative, reductive, and hydrolytic transformations. Chief among these are oxidative reactions, which enhance the hydrophilicity of xenobiotics and introduce polar functional groups to facilitate their elimination from the body.
Oxidation reactions are fundamental in aromatic carbon-containing systems. An example is the hydroxylation of phenobarbital, a process that transforms it into...
Oxidation reactions are fundamental in aromatic carbon-containing systems. An example is the hydroxylation of phenobarbital, a process that transforms it into...
01:28Microbial Bioremediation of Pesticides
Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...
01:20Radical Autoxidation
The oxidation of an organic compound in the presence of air or oxygen is called autoxidation. For example, cumene reacts with oxygen to form hydroperoxide. Autoxidation involves initiation, propagation, and termination steps. Many organic compounds are susceptible to autoxidation—especially ethers in the presence of oxygen, which form hydroperoxides. Even though this reaction is slow, old ether bottles contain small amounts of peroxide, which leads to laboratory explosions during ether...
01:22Electrophilic Aromatic Substitution: Sulfonation of Benzene
Sulfonation of benzene is a reaction wherein benzene is treated with fuming sulfuric acid at room temperature to produce benzenesulfonic acid. Fuming sulfuric acid is a mixture of sulfur trioxide and concentrated sulfuric acid.
01:26Microbial Bioremediation of Hydrocarbons
Bioremediation is an environmentally sustainable process that employs living organisms—primarily microorganisms—to degrade or neutralize pollutants from contaminated environments. In oil spills and hydrocarbon pollution, bioremediation involves the use of hydrocarbon-degrading bacteria to transform toxic compounds into less harmful substances. This approach leverages natural microbial metabolic processes and is considered both cost-effective and ecologically favorable compared to physical or...