카탈로그 번호 / ID. 19101
QIAGEN Ribonuclease A (RNase A) is endonuclease-free and quality-controlled for use in plasmid purification procedures for digestion of RNA. This ready-to-use solution has the same specifications as the RNase supplied in all QIAGEN plasmid DNA purification kits. An aliquot of the solution must be diluted into Buffer P1 to the appropriate concentration.
QIAGEN Ribonuclease A is DNase-free and quality-controlled for use in plasmid purification procedures for the digestion of RNA.
RNase A is widely used to remove contaminating RNA during the isolation of plasmid and genomic DNA. RNase A is also used to remove contaminating RNA from DNA samples after extraction or PCR, especially if downstream applications (e.g., cloning or sequencing) require RNA-free DNA.
RNase A is very active under a wide range of reaction conditions and is difficult to inactivate.
QIAGEN RNase A does not need to be boiled before use.
| Feature | RNase A |
|---|---|
| Quantity | 2.5 mL |
| Concentration | 100 mg/; 7000 units/ml, solution |
| Unit definition | One Kunitz unit is the amount of enzyme causing the hydrolysis of RNA at a rate such that the velocity constant (k) equals unity at 25°C and pH 5.0 |
Before use in plasmid and DNA purification, centrifuge QIAGEN RNase A briefly, and then add into Buffer P1 to obtain a final concentration of 100 μg/mL. Store Buffer P1 at 2–8°C after addition of RNase A. For detailed instructions on RNase A usage during plasmid and DNA purification, please refer to the corresponding kit handbook.