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XbaI

Kód produktu: ER0685 Kód výrobce: ER0685 Kód dodavatele: {85C9FA97-90DF-4FBF-9B9D-B3FD2FAD556F} Výrobce: Life Technologies Czech Republic s.r.o.
1 916,64 Kč
1 584,00 Kč bez DPH
do týdne
3000 units

5'...TC T A G A...3'
3'...A G A T CT...5'

Zobraz detailní popis

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

For methylation sensitivity refer to product specifications.

Compatible Ends BcuI, Eco130I, NheI, XmaJI.
Conditions for 100% Activity
  • 1X Buffer Tango: 33 mM Tris-acetate (pH 7.9 at 37°C), 10 mM Mg-acetate, 66 mM K-acetate, and 0.1 mg/mL BSA
  • Incubate at 37°C
Digestion of Agarose-embedded DNA Minimum 5 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.
Hazardous No
Isoschizomers Search for commercial isoschizomers using REsearch.
Note
  • Assayed using Lambda DNA (dam-) (#SD0021).
  • XbaI is blocked by overlapping dam methylation. To avoid dam methylation, use a dam-, dcm- strain such as GM2163.
Storage Buffer XbaI is supplied in 10 mM Tris-HCl (pH 7.4 at 25°C), 100 mM KCl, 7 mM 2-mercaptoethanol, 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 37°C 50-100 50-100 20-50 0-20 100 50-100 1X or 2X

Methylation Effects

  • Dam: may overlap – blocked.
  • Dcm: never overlaps – no effect.
  • CpG: never overlaps – no effect.
  • EcoKI: never overlaps – no effect.
  • EcoBI: never overlaps – no effect.
Methylation type Sequence Cleavage effect
Dam(GATC) 5'...TCTAGm6A TC...3'
3'...AGATC Tm6AG...5'
Blocked

Cleavage efficiency close to the termini of PCR fragments

bp from the recognition site to fragment end
1 2 3 4 5
20-50 50-100

Number of recognition sites in DNA molecules

Lambda ΦX174 M13mp18/19 pBR322 puc18/19 pUC57
1 0 1 0 1 1
pTZ19R/U pTZ57R pBluescriptIIKS(-/+) pBluescriptIISK(-/+) pACYC177 pACYC184
1 1 1 1 0 1

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
T^CTAGA
  • BcuI (SpeI)/FastDigest SpeI (BcuI) (A^CTAGT)
  • Eco130I (StyI)/FastDigest StyI (Eco130I)* (C^CTAGG)
  • NheI/FastDigest NheI (G^CTAGC)
  • XmaJI (AvrII)/FastDigest AvrII (XmaJI) (C^CTAGG)
  • FspBI (BfaI)/FastDigest BfaI (FspBI)

Newly generated recognition sites resulting from fill-in of 5'-overhang and self-ligation

Recognition Sequence Newly generated sequence after reaction Enzymes that cleave the newly generated sequence
T^CTAGA TCTAGCTAGA
  • AluI/FastDigest AluI
  • CviJI
  • [FspBI (BfaI)/FastDigest BfaI (FspBI)]
  • SetI

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