DNA polymerase, thermotoga neapolitana
DNA polymerase, thermotoga neapolitana

DNA polymerase from Thermotoga neapolitana was identified[1] as an enzyme able to withstand the protein-denaturing conditions (high temperature) required during PCR[2].
 
Name Cat# Size Concentration Price Qty
DNA polymerase, thermotoga neapolitana
DPTN-100
1,250 units
5 U/μl
$90.00
DNA polymerase, thermotoga neapolitana
DPTN-200
5,000 units
5 U/μl
$273.00
DNA polymerase, thermotoga neapolitana
DPTN-OEM
Any Size
please inquire

Description:
Due to its thermostable nature, Thermotoga neapolitana DNA polymerase (Tne) was identified(1) as an enzyme able to withstand the protein-denaturing conditions (high temperature) required during PCR(2). Similar to E. coli DNA polymerase I, but unlike Taq DNA polymerase, Tne DNA polymerase contains both 3'-> 5' and 5'-> 3'- exonulease activities. Therefore,  it replaced the DNA polymerase from E. coli originally used in PCR (3). Taq's optimum temperature for activity is 75-80°C, with a half-life of 9 minutes at 97.5°C, and can replicate a 1000 bp strand of DNA in less than 10 seconds at 72°C(4).

The DNA products have an A (adenine) overhangs at their 3' ends. This may be useful in TA cloning, whereby a cloning vector (such as a plasmid) that has a T (thymine) 3'- overhang is used, which complements with the A overhang of the PCR product, thus enabling ligation of the PCR product into the plasmid vector.

Application:
- PCR (ordinary and high-throughput)
- Primer Extension
- Microarray Analysis
- Denaturing high performance liquid chromatography (DHPLC)

Source:
Thermotoga neapolitana (Tne) DNA polymerase belongs to the DNA polymerase I (Pol I) family.

Recommended Reaction Conditions:
94°C, 1 minute. -> (94°C, 10 seconds. -> 55°C, 30 seconds. ->72°C, 30 seconds.) for 25 cycles.

Recommended Storage Condition: -20ºC

References:
1. Chien A, Edgar DB, Trela JM (1976). "Deoxyribonucleic acid polymerase from the extreme thermophile Thermus aquaticus". J. Bact. 127 (3): 1550–7. PMC 232952. PMID 8432.
2.Saiki, RK; et al. (1988). "Primer-directed enzymatic amplification of DNA with a thermostable DNA polymerase.". Science 239 (4839): 487–91. doi:10.1126/science.2448875. PMID 2448875.
3. Saiki, RK; et al. (1985). "Enzymatic amplification of beta-globin genomic sequences and restriction site analysis for diagnosis of sickle cell anemia". Science 230 (4732): 1350– doi:10.1126/science.2999980. PMID 2999980.
4. Lawyer FC, et al. (1993). "High-level expression, purification, and enzymatic characterization of full-length Thermus aquaticus DNA polymerase ...". PCR Methods Appl. 2 (4): 275–87. PMID 8324500.

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