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HomeFAQsHow much DNA should be used in a ligation using T7 DNA Ligase?
FAQ: How much DNA should be used in a ligation using T7 DNA Ligase?
To promote circle formation, useful in transformation, the overall concentration of vector + insert should be between 1-10 μg/ml for efficient ligation. Insert:vector molar ratios between 2 and 6 are optimal for single insertions. Ratios below 2:1 result in lower ligation efficiency. Ratios above 6:1 promote multiple inserts. If you are unsure of your DNA concentrations, perform multiple ligations with varying ratios.