Restriction Enzyme Digest Calculator
Calculate the volume of restriction enzyme needed to digest a given amount of DNA. Essential for molecular cloning and DNA analysis workflows.
Restriction Enzyme Digest
basicCalculate enzyme volume needed for DNA restriction digest
Formula
Units needed = DNA (μg) × 5-10 U/μg
Scenario A
How It Works
A standard restriction digest uses 5-10 units of enzyme per microgram of DNA. The calculator determines the volume of enzyme stock solution to add to your reaction.
Total Units = DNA (μg) × Units per μg DNA
Enzyme Volume = Total Units / Enzyme Concentration (U/μL)
Note: Always keep enzyme volume below 10% of total reaction volume to avoid glycerol inhibition, and use the appropriate buffer.
Example
Digest 1 μg of plasmid DNA with EcoRI at 10 U/μL concentration:
Total Units = 1 μg × 5 U/μg = 5 U
Enzyme Volume = 5 U / 10 U/μL = 0.50 μL
Frequently Asked Questions
How many units of enzyme should I use per μg of DNA?
Standard digest: 5-10 U/μg DNA. For plasmid DNA, 5 U/μg is usually sufficient. For genomic DNA, use 10 U/μg for complete digestion. Overnight digests can use less enzyme.
Why should enzyme volume stay under 10% of total reaction?
Restriction enzymes are stored in 50% glycerol. Adding too much glycerol (>5% final) can cause star activity — where the enzyme cuts at non-specific recognition sites.
Save Configuration Snapshot
Save current parameters to your dashboard for instant one-click reloading.
About This Calculator & Guide
About the Restriction Enzyme Digest Calculator
The Restriction Enzyme Digest Calculator is a specialized online utility designed to help you calculate enzyme volume needed for dna restriction digest. free online molecular biology restriction enzyme calculator. It performs calculations in real-time to provide immediate, reliable estimates for study, work, or daily tasks.
How to Use
Simply enter your parameters in the input fields of the calculator widget above. The tool evaluates the inputs instantly and displays the results in real-time. You can modify any value to check alternate scenarios and compare figures dynamically.
Data Privacy & Safety
All calculations are executed locally within your web browser. No inputs are sent to our servers or stored externally, ensuring your personal and financial details remain completely private and secure.
FAQ
Frequently Asked Questions
What does the Restriction Enzyme Digest Calculator do?+
Calculate enzyme volume needed for DNA restriction digest. Free online molecular biology restriction enzyme calculator. It is designed for quick everyday use and gives clear results without requiring a sign in.
Is the Restriction Enzyme Digest Calculator free to use?+
Yes. The Restriction Enzyme Digest Calculator is free to use online and works directly in your browser.
Can I use the Restriction Enzyme Digest Calculator on mobile?+
Yes. The calculator layout is responsive, so you can use it on phones, tablets, laptops, and desktop screens.