Cfr42I (SacII) (10 U/µL)
5'...C C G C↓G G...3'
3'...G G↑C G C C...5'
3'...G G↑C G C C...5'
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.
- 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
- Molecular cloning
- Restriction site mapping
- Southern Blot
- Restriction fragment length polymorphism (RFLP)
Cfr42I activity is affected by high salt concentration. Trace amounts of sodium chloride remaining in the substrate DNA after completion of upstream applications may inhibit enzyme activity and result in impaired DNA cleavage. Certain sites in lambda DNA are difficult to cleave with Cfr42I, the same as with its prototype SacII. At least two copies of Cfr42I recognition site are required for efficient cleavage.
For methylation sensitivity refer to product specifications.
|Conditions for 100% Activity||
|Digestion of Agarose-embedded DNA||Minimum 20 units of the enzyme are required for complete digestion of 1 µg of agarose-embedded lambda DNA in 16 hours.|
|Double Digestion||Perform double digestion using DoubleDigest.|
|Isoschizomers||Search for commercial isoschizomers using REsearch.|
|Storage Buffer||Cfr42I is supplied in 10 mM potassium phosphate (pH 7.4 at 25°C), 100 mM NaCl, 1 mM EDTA, 1 mM DTT, 0.2 mg/mL BSA, and 50% (v/v) glycerol.|
|Storage Condition||-20 C|
|Recommended buffer for 100% activity||Optimal temperature||Enzyme activity in Thermo Scientific buffers, %||Tango buffer for double digestion|
1X / 2X
- Dam: never overlaps - no effect.
- Dcm: never overlaps - no effect.
- CpG: completely overlaps - blocked.
- EcoKI: never overlaps - no effect.
- EcoBI: never overlaps - no effect.
|Methylation type||Sequence||Cleavage effect|
Cleavage efficiency close to the termini of PCR fragments
|bp from the recognition site to fragment end|
Number of recognition sites in DNA molecules
New sites generated by ligation
Newly generated recognition sites resulting from ligation of protruding compatible DNA ends
|Recognition Sequence||Second Enzyme||Enzymes recognizing newly generated recognition sequence|
Newly generated recognition sites resulting from removal of 3'-overhang and self-ligation
|Recognition Sequence||Newly generated sequence after reaction||Restriction enzymes that cleave the newly generated recognition sequence|
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