Automated Method for Measuring Deoxyribonuclease Activity
Author Information
Author(s): I. C. Locke, M. P. Ramsey, S. S. HilFf, B. G. Carpenter
Primary Institution: School of Pharmacy and Biomedical Sciences, University of Portsmouth
Hypothesis
Can an automated method effectively determine deoxyribonuclease activity despite the presence of inorganic cations?
Conclusion
The automated assay provides a more accurate profile of deoxyribonuclease activity by removing the inhibitory effects of sodium chloride.
Supporting Evidence
- The automated method can overcome issues caused by inorganic cations.
- Comparison with manual methods showed that the automated system provides a more realistic profile of nuclease activity.
- Dialysis units were used to minimize the effects of sodium chloride on enzyme activity.
Takeaway
This study shows a new way to automatically measure how well certain enzymes break down DNA, which helps in understanding their activity better.
Methodology
The study used an automated Technicon AutoAnalyser to measure absorbance changes at 260 nm to determine nuclease activity from chromatographic fractions.
Limitations
The assay may not be suitable for restriction endonucleases that cut DNA at specific sites, as they produce minimal absorbance changes.
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