Taq DNA 중합효소
제품 번호:E001A 사양:500U/1000U/5000U Storage: -20°C에서 보관
제품소개:
This product is Taq DNA Polymerase, commonly referred to as Taq enzyme, which is one of the most widely used DNA polymerases. It is expressed in Escherichia coli with the cloned gene of Thermus aquaticus DNA Polymerase and then purified through multiple steps. 그만큼 PCR products amplified using this product have an added A base at the 3′ end, allowing for cloning into T vectors.
상품 내용:
구성요소 | E001A-01(500U) | E001A-02(1000U) | E001A-03(5000U) |
Taq DNA Polymerase(5U/µL) | 100µL | 200µL | 1밀리리터 |
dNTP Mixture (10각각 mM) | 100µL | 200µL | 1밀리리터 |
10× PCR Buffer (마그네슘2+ ...을 더한)
| 1밀리리터 | 2× 1mL | 10× 1mL |
저장:
-20°C에서 보관, with a minimum shelf life of 12 개월.
Activity Definition:
Using activated largemouth bass sperm DNA as a template/primer, the intake of 10 nmol of total nucleotides as acid-insoluble material within 30 minutes at 74°C is defined as 1 unit of activity (유).
Quality Control:
This product has undergone quality testing and is free from endonuclease activity, exonuclease activity, and ribonuclease contamination. Residual host genomic DNA is below 10 copies.
Product Usage:
Amplification of DNA using PCR method; DNA sequence determination.
Usage Instructions:
- Dissolve and mix all required solutions for the PCR reaction and place them on an ice bath or in a cooler. It is recommended to aliquot the PCR reaction mixture to avoid repeated freeze-thaw cycles.
- It is advisable to set up the PCR reaction system on an ice bath or in a cooler, following the recommended reaction system for reference.
- Excessive template DNA can lead to nonspecific PCR products. Recommended template amounts for different types of templates in a 50µL reaction volume are as follows:
Genomic DNA from Animals and Plants: 0.1-1µg;
Genomic DNA from Escherichia coli: 10-100ng;
플라스미드 DNA: 0.1-10ng.
Recommended Reaction System:
시약 | 50µL System Volume | Final Concentration |
Taq DNA 중합효소 | 1µL | 0.1유 |
10× PCR Buffer (마그네슘2+ ...을 더한) | 5µL | 1× |
dNTP Mixture (10각각 mM) | 1µL | 0.2각각 mM |
Primer I (10µM) | 1µL | 0.2µM |
Primer II (10µM) | 1µL | 0.2µM |
템플릿 DNA | 1µL | — |
ddH2O | To 50µL | — |
메모: The amounts of each component in the reaction system can be adjusted according to actual requirements.
- Thoroughly pipette and mix the prepared reaction system using a pipette, seal the PCR tubes with caps, label them appropriately, and briefly centrifuge at room temperature.
- Place the prepared PCR tubes into the PCR 기계, set the reaction conditions, and initiate the PCR reaction.
Reaction Conditions:
Method/Steps | Time setting | Cycles |
95℃ (Pre-denaturation) | 2-5분 | 1 |
95℃ (변성) | 30sec | 25-35 Cycles |
55℃-60℃ (가열 냉각) | 30sec | |
72℃ (확대) | 1분 | |
72℃ (Final Extension) | 10분 | 1 |
4℃ (Hold) | ∞ | — |
메모: Reaction conditions can be adjusted and optimized according to actual requirements.
지침:
- Extension time can be adjusted based on factors such as the length and GC content of the PCR product. The extension time per kb of the product is closely related to the complexity of the template: simple templates require 20 초, typical templates require 30 초, and complex templates require 1 분.
- The setup of the PCR reaction should be tailored to different conditions such as template, primers, length of PCR product, and GC content. The final concentration of primers typically falls within the range of 0.1-1.0μM. DNA template concentration can be adjusted accordingly. For complex templates or high GC content, it’s recommended to prolong pre-denaturation/denaturation or extension times and increase denaturation/annealing temperatures.
- Use designated areas and pipettes before and after amplification, wear gloves, and change them frequently. After completing the PCR reaction, do not open the reaction tubes immediately. Allow them to cool sufficiently at 4°C or -20°C before opening to minimize the risk of PCR product contamination to the laboratory environment.
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