Aldehyde oxidase
An enzyme involved in the metabolism of aldehydes and nitrogen-containing compounds
Aldehyde Oxidase[edit | edit source]
Aldehyde oxidase is a molybdenum-containing enzyme that plays a crucial role in the metabolism of a wide range of endogenous and exogenous aldehydes and nitrogen-containing compounds. It is a member of the xanthine oxidase family of enzymes and is found in many tissues throughout the body, including the liver, lung, and kidney.
Structure[edit | edit source]
Aldehyde oxidase is a complex enzyme that contains a molybdenum cofactor, two iron-sulfur clusters, and a flavin adenine dinucleotide (FAD) moiety. The enzyme is a homodimer, meaning it consists of two identical subunits. Each subunit contains the necessary cofactors for catalytic activity.
Function[edit | edit source]
The primary function of aldehyde oxidase is to catalyze the oxidation of aldehydes to their corresponding carboxylic acids. This reaction involves the transfer of electrons from the aldehyde to molecular oxygen, producing the carboxylic acid and hydrogen peroxide as byproducts. Aldehyde oxidase also participates in the metabolism of various drugs and xenobiotics, contributing to their detoxification and elimination from the body.
Clinical Significance[edit | edit source]
Aldehyde oxidase is involved in the metabolism of several clinically important drugs, including antidepressants, antipsychotics, and antiparasitic agents. Variations in aldehyde oxidase activity can affect drug metabolism and lead to differences in drug efficacy and toxicity among individuals. Genetic polymorphisms in the gene encoding aldehyde oxidase can result in altered enzyme activity, impacting drug metabolism.
Related Enzymes[edit | edit source]
Aldehyde oxidase is closely related to other molybdenum-containing enzymes, such as xanthine oxidase and sulfite oxidase. These enzymes share structural similarities and have overlapping substrate specificities, although each enzyme has distinct physiological roles.
Research and Applications[edit | edit source]
Research on aldehyde oxidase has focused on its role in drug metabolism and its potential as a target for drug development. Inhibitors of aldehyde oxidase are being investigated for their ability to modulate drug metabolism and improve the pharmacokinetic properties of therapeutic agents.
Related pages[edit | edit source]
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Contributors: Prab R. Tumpati, MD
