BspPI (AlwI)
Detailní popis
Thermo Scientific conventional restriction endonucleases are a large collection of high quality restriction enzymes, optimized to work in one of the buffers of the Five Buffer System. In addition, the universal Tango buffer is provided for convenience in double digestions. All of the enzymes exhibit 100% activity in the recommended buffer and reaction conditions. To ensure consistent performance, Thermo Scientific restriction enzyme reaction buffers contain premixed BSA, which enhances the stability of many enzymes and binds contaminants that may be present in DNA preparations.
Highlights
- Superior quality – stringent quality control and industry leading manufacturing process
- Convenient color-coded Five Buffer System
- Includes universal Tango buffer for double-digestions
- BSA premixed in reaction buffers
- Wide selection of restriction endonuclease specificities
Applications
- Molecular cloning
- Restriction site mapping
- Genotyping
- Southern Blot
- Restriction fragment length polymorphism (RFLP)
- SNP
Note
Incubation at 37°C results in 30% activity. Assayed using lambda DNA (dam-) (#SD0021). BspPI is blocked by overlapping dam methylation. To avoid dam methylation, use a dam-, dcm- strain, such as GM2163.
For methylation sensitivity refer to product specifications.
Conditions for 100% Activity |
|
Double Digestion | Perform double digestion using DoubleDigest. |
Hazardous | No |
Isoschizomers | Search for commercial isoschizomers using REsearch. |
Storage Buffer | BspPI is supplied in: 10 mM Tris-HCl (pH 7.4 at 25°C), 100 mM KCl, 1 mM DTT, 1 mM EDTA, 0.2 mg/mL BSA, and 50% (v/v) glycerol. |
Storage Condition | -20 C |
Reaction conditions
Recommended buffer for 100% activity | Optimal temperature | Enzyme activity in Thermo Scientific buffers, % | Tango buffer for double digestion | |||||
---|---|---|---|---|---|---|---|---|
B (blue) 1X |
G (green) 1X |
O (orange) 1X |
R (red) 1X |
Tango (yellow) 1X / 2X |
||||
Tango | 55°C | 20-50 | 20-50 | 0-20 | 0-20 | 100 | 0-20 | 1X |
Methylation Effects
- Dam: completely overlaps - blocked.
- Dcm: may overlap - no effect.
- CpG: may overlap - no effect.
- EcoKI: never overlaps - no effect.
- EcoBI: may overlap - effect not determined.
Methylation type | Sequence | Cleavage effect |
---|---|---|
Dam (GATC ) |
GGm6ATC |
Blocked |
Dcm (CCWGG ) |
5'...Cm5CW GGATC ...3'3'... G GWm5CCTAG ...5' |
No effect |
CpG | 5'...GGATm5C G ...3'3'... CCTA Gm5C ...5' |
No effect |
CpG | 5'...m5C GGATC ...3'3'... Gm5CCTAG ...5' |
No effect |
Cleavage efficiency close to the termini of PCR fragments
bp from the recognition site to fragment end | ||||
---|---|---|---|---|
1 | 2 | 3 | 4 | 5 |
0 | 50-100 |
Number of recognition sites in DNA molecules
Lambda | ΦX174 | M13mp18/19 | pBR322 | puc18/19 | pUC57 |
---|---|---|---|---|---|
58 | 0 | 4 | 12 | 10 | 10 |
pTZ19R/U | pTZ57R | pBluescriptIIKS(±) | pBluescriptIISK(±) | pACYC177 | pACYC184 |
10 | 10 | 10 | 10 | 13 | 4 |
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