© 2026 Sinochem Nanjing Corporation,
All Right Reserved
D-Amino Acid Oxidase is a flavin-dependent enzyme responsible for catalyzing the deamination of D-amino acids into their corresponding imino acids, hydrogen peroxide, and ammonia. This enzyme plays a pivotal role in various biochemical reactions across multiple species, from yeasts to mammals. In daily laboratory practice, the specificity for D-isomers, not L-isomers, allows researchers to distinguish between the two forms during analytical experiments, providing a crucial tool for work in neurobiology and disease investigation. Its use extends to the production of β-lactam antibiotics, removal of toxic D-amino acids, and amino acid analysis, supporting scientific advancements and industrial synthesis.
D-Amino Acid Oxidase typically appears as a white to off-white solid, crystalline powder, or sometimes in lyophilized flake form. The pure enzyme may be presented as a stabilized liquid solution for laboratory use or delivered as a bulk powder for industrial processing. Solubility in water and various aqueous buffers demonstrates flexibility for researchers who need to adjust concentrations or pH conditions for assays. Many suppliers offer the material in vials containing microgram to gram quantities, ensuring accuracy for analytical requirements. This enzyme tolerates a range of temperatures but loses activity beyond 37°C, so cold storage remains a must for retaining its function.
The structure of D-Amino Acid Oxidase centers on a single polypeptide chain, often consisting of 347 amino acids, and relies on one molecule of flavin adenine dinucleotide (FAD) as a tightly bound cofactor. The detailed protein database entry gives a molecular formula near C1743H2759N513O535S15 for the human enzyme, although the exact values will depend on the biological source and any tags or truncations added for research use. The molecular weight hovers around 39,400 Daltons for recombinant forms. Structural elucidation by X-ray crystallography shows a compact globular formation with a deep active pocket, allowing only D-amino acids entry and facilitating its selectivity, which grants the enzyme its analytical and bioprocessing value.
D-Amino Acid Oxidase arrives most often as a solid, with powders and crystalline flakes being the industry standard. The density of the raw material can vary based on its hydration state and any excipients used for stabilization, typically falling in the range common to globular proteins (approx. 1.3-1.4 g/cm³). Some laboratories request soluble enzyme solutions, allowing direct pipetting into assay buffers and reducing preparation steps. Less frequently, it’s available as pearls or bulk pellets, though these require dissolution before use. The solid and powder forms handle easily in the lab as long as proper desiccation and light avoidance take place.
Manufacturers detail purity using SDS-PAGE, specific activity (units/mg protein), and absence of contaminating nucleases or proteases. Most supply certificates confirm at least 95% purity by electrophoresis, ensuring confidence in results where enzyme activity is vital. For shipping and regulatory compliance, D-Amino Acid Oxidase falls under HS Code 3507.90: enzymes; prepared enzymes not elsewhere specified or included. Bulk production often involves microbial fermentation, followed by multi-step purification. The raw form, ready for chemical synthesis pipelines, supports pharmaceutical and fine chemical needs without unnecessary additives.
D-Amino Acid Oxidase, like many biocatalysts, poses negligible hazard in routine handling within the research environment. Inhalation or long-term exposure could trigger allergic responses; laboratory staff practice standard precautions for proteinaceous dusts. GHS labelling marks the substance as not hazardous in typical concentrations, but enzymatic activity demands care to avoid accidental release of hydrogen peroxide, a byproduct, which requires good ventilation and appropriate waste management. Material Safety Data Sheets recommend storage at -20°C or colder, shielded from light and moisture. Gloves, lab coats, and eye protection suffice for normal handling. No chronic toxicity or environmental hazard appears in available regulatory data, though only skilled personnel should handle the raw enzyme in bulk form.
D-Amino Acid Oxidase brings value for both clinical diagnostics and industrial synthesis. By breaking down D-amino acids, it allows hospitals and laboratories to diagnose metabolic disorders linked to D-amino acid accumulation. Industrial users add the enzyme to bioreactors for the synthesis of intermediates in antibiotics and for the detoxification of protein hydrolysates. Ingredient manufacturers use it to craft products with higher purity or novel taste profiles, while researchers exploit its unique selectivity for detailed studies on brain chemistry and neurodegenerative disease pathways. Stability, purity, and well-documented activity satisfy the traceability requirements expected in today’s quality-driven markets.
Modern techniques using recombinant DNA have streamlined the supply of D-Amino Acid Oxidase, with E. coli and yeast strains producing the enzyme in substantial volumes. This upward trend improves accessibility for smaller labs and startups involved in synthetic biology or enzyme engineering. Buyers push for higher specificity, broader substrate range, or improved temperature tolerance in new variants. As biomanufacturing takes on greater loads of chemical production traditionally owned by petroleum or mining industries, the demand for scalable and safe raw enzymes only increases. Direct partnerships with certified suppliers, traceable batch records, and open communication on material origin—covering everything from amino acid sequence to packaging details—address the growing need for accountability in chemicals.
