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Restriction Endonucleases >
Restriction Endonucleases >
BtgZI |
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Prices are in US dollars and valid only for US orders.
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Recognition Site:
isoschizomers | compatible ends | single letter code
Source:
Bacillus thermoglucosidasius (X. Pan)
Reagents Supplied:
NEBuffer 4
Enzyme Properties
Activity in NEBuffers:
| NEBuffer 1: | | 10% | | NEBuffer 2: | | 25% | | NEBuffer 3: | | 0% | | NEBuffer 4: | | 100% |
When using a buffer other than the optimal (supplied) NEBuffer, it may be necessary to add more enzyme to achieve complete digestion.
Methylation Sensitivity:
| dam methylation: Not sensitive | | dcm methylation: Not sensitive | | CpG methylation: Blocked |
Activity at 37°C:
75%
Heat Inactivation:
80°C for 20 minutes
Survival in a Reaction:
Minimum units to digest 1 µg of substrate DNA in 16 hours: 1.00 unit(s)
Reaction & Storage Conditions
Reaction Conditions:
1X NEBuffer 4
Supplemented with 100 μg/ml Bovine Serum Albumin
Incubate at
60°C.
1X NEBuffer 4:
20 mM Tris-acetate
50 mM potassium acetate
10 mM Magnesium Acetate
1 mM Dithiothreitol
pH 7.9 @ 25°C
Unit Definition:
One unit is defined as the amount of enzyme required to digest 1 µg of λ DNA in 1 hour at 60°C in a total reaction volume of 50 µl.
Concentration:
2,000 units/ml
Unit Assay Substrate:
λ DNA
Storage Conditions:
10 mM Tris-HCl
50 mM KCl
1 mM Dithiothreitol
0.1 mM EDTA
200 µg/ml BSA
50% Glycerol
pH 7.4 @ 25°C
Storage Temperature:
-20°C
Diluent Compatibility:
Diluent A
Notes
General notes:- BtgZI can remain bound to DNA after cutting and alter migration rate of DNA during electrophoresis. To disrupt binding, add SDS to a final concentration of 0.5% or purify DNA before electrophoresis.
- Incubation at 37°C results in 75% activity.
FAQs
- Why are the DNA bands run on an agarose gel smeared?
- What is the activity of BtgZI at 37°C?
- What is the activity of BtgZi at 25°C?
- Is BtgZi activity blocked by methylation?
Quality Control for Current Lot
Quality control values for a specific lot can be found on the datacard which accompanies each product.
Ligation and Re-cutting:
After a 5-fold overdigestion with BtgZI, approximately 75%
of the DNA fragments can be ligated with T4 DNA Ligase (at a 5' termini concentration of 1-2 μM)
at 16ºC. Of these ligated fragments, approximately 75% can be recut with BtgZI.
16-Hour Incubation:
A 50 μl reaction containing 1 μg of DNA
and 8 units of BtgZI incubated for 16 hours at 60ºC
resulted in a DNA pattern free of detectable nuclease degradation as determined by agarose gel electrophoresis.
Exonuclease Activity:
Incubation of a 50 μl reaction containing 2 units of BtgZI with 1 μg of a mixture of single and double-stranded
[3H] E. coli DNA (205 cpm/μg) for 4 hours at 60ºC
released < 0.2% of the total radioactivity.
Endonuclease Activity:
Incubation of a 50 μl reaction containing 20 units of BtgZI with 1 μg of
pUC19 DNA for 4 hours at 60ºC resulted
in < 10% conversion to RFII as determined by agarose gel electrophoresis.
Reagents Sold Separately
NEBuffer 4
Legal
Patents:
New England Biolabs, Inc.: US Patent No. 7,029,900
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