Sulfhydryl oxidases: sources, properties, production and applications

Area of Science:

• Biochemistry
• Enzymology

Background:

• Disulfide bonds are crucial for protein and small molecule functionality.
• Sulfhydryl oxidases (SOXs) catalyze the oxidation of sulfhydryl groups using molecular oxygen.
• SOXs exist intracellularly (protein folding) and extracellularly (small compounds, unknown roles).

Purpose of the Study:

• To provide an up-to-date summary of sulfhydryl oxidases (SOXs).
• To review SOX families, production methods, and current/potential applications.
• To analyze sequence features, domain organization, and physicochemical properties of characterized SOXs.

Main Methods:

• Literature review of scientific publications and patent applications.
• Analysis of sequence features and domain organization.
• Evaluation of physicochemical properties of SOX enzymes.

Main Results:

• SOXs are diverse enzymes with varied substrate specificities and localizations.
• Intracellular SOXs primarily function in protein folding.
• Extracellular SOXs act on small molecules, with physiological roles yet to be elucidated.
• There is a growing body of research and patent activity surrounding SOXs.

Conclusions:

• SOXs represent a significant class of enzymes with diverse biological roles and biotechnological potential.
• Further research into extracellular SOXs may reveal novel physiological functions.
• The increasing number of patents indicates growing industrial interest in SOX applications.