PR1MA™ Plates-Permeable

Cell Culture Inserts
Item #: ASPERMINSERTS 
Bullseye Taq DNA Polymera


This brand is being discontinued.


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Bullseye PREMIUM PR DNA Polymerase

PR DNA Polymerase, High Fidelity, 2.5 U / uL

  • Provides higher fidelity than standard Taq DNA Polymerase
  • Produces blunt-ended fragments
  • Processes <3 kb with extremely high fidelity
Item #Units10X Ammonium Buffer (MgCl2 15 mM)MgCl2 25 mM
BE2111022501.5 mL1.5 mL
BE2103035001.5 mL1.5 mL
BE2111041,0002 x 1.5 mL2 x 1.5 mL
BE2111062,5004 x 1.5 mL4 x 1.5 mL

Store at -20°C. For in-vitro laboratory use only

Bullseye PREMIUM PR DNA Polymerase is a thermostable enzyme with proofreading ability, which can be used in primer extension reactions and other molecular biology applications. PR Polymerase exhibits both 5'-3' DNA polymerase activity and 3'-5' proofreading exonuclease activity. It is recommended for applications, which require extremely high fidelity or blunt ending.

Optimal reaction conditions are achieved by using the 10x Ammonium buffer containing MgCl2 provided with the enzyme. 25 mM MgCl2 is also included separately, in case a higher MgCl2 concentration is required for a specific reaction.

Unit Definition
One unit is defined as the amount that incorporates 10 nmoles of dNTPs into acid-precipitable form in 30 minutes at 72°C under standard assay conditions.

10X Ammonium Reaction Buffer
Tris-HCl pH 8.5, (NH4)2SO4, 1% Tween20,
15mM MgCl2

PR Storage Buffer
50 mM Tris-HCl (pH 8.0), 50 mM NaCl, 0.1 mM EDTA, 1 mM DTT, 50% Glycerol, 0.1% NP40, 0.1% Tween-20.

Quality Control
Endonuclease, exonuclease and priming activities are not detected after 3 hours incubation of 1 mg of pUC19 plasmid DNA and 0.5 µg EcoR I digested lambda phage DNA at 72°C in the presence of 40 units of PR DNA Polymerase.

Suggested Protocol using PR DNA Polymerase
 

This protocol serves as a guideline. Optimal reaction conditions must be individually determined.

1. Thaw 10X Ammonium Buffer, dNTP mix, and primer solutions. It is important to mix the solutions completely before use to avoid localized concentrations of salts.

2. Prepare a master mix according to Table 1. The master mix typically contains all the components needed for extension except the template DNA.
The optimal MgCl2 concentration should be determined empirically but in most cases a concentration of 1.5 mM, as provided in the 1X Ammonium Buffer, will produce satisfactory results. Table 2 provides the volume of 25 mM MgCl2 to add to the master mix if a higher MgCl2 concentration is required.

Table 1. Reaction components (master mix and template DNA)

ComponentVol./reactionFinal Conc.
10X Ammonium Buffer5 uL1X
dNTP mix (12.5 mM of ea)0.8 uL0.2 mM of each dNTP
Primer AVariable0.1-0.5 uM
Primer BVariable0.1-0.5 uM
PR Polymerase1 uL2.5 units/reaction
Distilled WaterVariable- - - -
Template DNAVariable0.1-0.5 uG/reaction
Total volume50 uL- - - -

Table 2. MgCl2 concentration in a 50 uL reaction

Final MgCl2 conc. in reaction (mM)1.522.533.544.5
Additional Vol. of 25 mM MgCl2 / Reaction (uL)0123456

3. Mix the master mix thoroughly and dispense appropriate volumes into reaction tubes. Mix gently, e.g., by pipetting the master mix up and down a few times.

4. Add template DNA (0.1-0.5 mg/reaction) to the individual tubes containing the master mix.

5. Program the thermal cycler according to the manufacturer's instructions. PR is a proofreading enzyme and requires an extension time of 1-2 min/kb. For maximum yield and specificity, temperatures and cycling times should be optimized for each new template target or primer pair.

6. Place the tubes in the thermal cycler and start the reaction.

PNPCRREAG

Magnesium
Mg
Dye
No Dye
Enzymes
Premium
Pkg
Indiv
Type
Proof Reading
 
Item#:
ASPRIMADNAPOL
 
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PR1MA Plates - Permeable
PR1MA™ Plates-Permeable
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