[The optimization of a method for determining RNAse activity by using high-polymer RNA]

Area of Science:

• Biochemistry
• Molecular Biology

Background:

• Accurate estimation of ribonuclease (RNase) activity is crucial for molecular biology research.
• Existing precipitation methods for free nucleotides may affect assay sensitivity and reliability.

Purpose of the Study:

• To compare various precipitation methods for free nucleotides.
• To identify the optimal method for quantifying RNase activity.

Main Methods:

• Evaluated precipitation using uranyl acetate in perchloric acid, ethanol with varying magnesium chloride concentrations, pure ethanol, and chlorine acid.
• Assessed RNase activity based on nucleotide precipitation efficiency.

Main Results:

• The optimal method for measuring RNase activity utilized 0.02M magnesium chloride in 96% ethanol.
• This method proved superior compared to other tested precipitants.

Conclusions:

• The combination of 0.02M magnesium chloride and 96% ethanol provides an effective and reliable method for free nucleotide precipitation.
• This optimized method enhances the accuracy of RNase activity estimations.