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γ-Glutamyl Transpeptidase Activity Assay.
1Osaka University Medical School, Osaka, Japan.
Current Protocols in Toxicology
|October 10, 2012
Summary
Gamma-glutamyl transpeptidase is crucial for glutathione metabolism. This unit details common assay methods using gamma-glutamyl donors for enzyme analysis.
Area of Science:
- Biochemistry
- Enzymology
Background:
- Gamma-glutamyl transpeptidase (GGT) plays a key role in cellular processes, particularly in glutathione metabolism.
- Understanding GGT activity is essential for various physiological and pathological studies.
Purpose of the Study:
- To describe standard assay methods for quantifying Gamma-glutamyl transpeptidase activity.
- To provide a practical guide for researchers utilizing GGT assays.
Main Methods:
- Assay methods employing gamma-glutamyl derivatives of p-nitroaniline as gamma-glutamyl donors.
- Spectrophotometric determination of enzyme activity based on p-nitroaniline release.
Main Results:
- Detailed protocols for common GGT assay techniques are presented.
- The utility of p-nitroaniline-based substrates for GGT quantification is highlighted.
Conclusions:
- Standardized assay methods are crucial for reliable GGT activity measurement.
- The described methods offer accessible and effective means for studying GGT in biological samples.
