Home | Molecular Biology | Restriction & Modifying Enzymes | Restriction Enzymes | FastDigest | FastDigest Enzymes

FastDigest AcuI (Eco57I)

5'...C T G A A G (N)16↓...3'
3'...G A C T T C (N)14↑...5'

FastDigest buffer for 100% activity Requires SAM for stated activity Optimal incubation at 37°C Thermal inactivation at 65°C in 5 min Recombinant enzyme LO certified

The FastDigest AcuI (Eco57I) restriction enzyme recognizes CTGAAG(16/14)^ sites and cuts best at 37°C in 5-15 minutes using universal Yellow Tango Buffer
  
Loading...
Lambda DNA digested with AcuI

Lambda DNA digested with AcuI, 1% agarose, 40 cleavage sites

Thermo Scientific FastDigest enzymes are an advanced line of fast restriction enzymes that are all 100% active in the universal FastDigest and FastDigest Green reaction buffers.

The universal buffer allows rapid single-, double- or multiple DNA digestion within 5-15 minutes eliminating any need for buffer change or subsequent DNA clean-up steps. DNA modifying enzymes, such as Klenow Fragment, T4 DNA Ligase, alkaline phosphatases and T4 DNA Polymerase all have 100% activity in FastDigest Buffer. Therefore, enzymes for downstream applications can be directly added to the FastDigest reaction mix.

For additional convenience FastDigest Green Buffer includes a density reagent and two tracking dyes for direct loading of digestion reaction products on gels.

Short incubation times and optimal composition of the universal FastDigest Buffer eliminate star activity effects.

Features

  • 100% activity of all FastDigest enzymes in the universal buffer
  • 100% buffer compatibility with downstream applications
  • Complete digestion in 5-15 minutes
  • Direct loading on gels
  • No star activity
  • 176 FastDigest enzymes available

Applications

  • Molecular cloning
  • Restriction site mapping
  • Genotyping
  • Southern Blot
  • Restriction fragment length polymorphism (RFLP)
  • SNP analysis

Note

FastDigest AcuI (Eco57I) requires only Mg2+ for its activity, but is stimulated by SAM. 0.01 mM SAM gives more than a 100-fold increase in FastDigest AcuI (Eco57I) activity. Still, a complete cleavage of some substrates with FastDigest AcuI (Eco57I) is difficult to achieve. For cleavage with FastDigest AcuI (Eco57I), at least two copies of its recognition sequence are required.

The FastDigest Green Buffer offers the same high performance in DNA digestion and downstream applications as the colorless FastDigest Buffer. For applications that require product analysis by fluorescence excitation (e.g. concentration measurements in UV light) the colorless FastDigest Buffer is recommended.

For methylation sensitivity refer to product specifications.

  
Storage Condition-20 C
HazardousNo
Formulation1 μL of enzyme (1 FDU) cleaves 1 μg of lambda DNA in 15 minutes at 37°C in 1X FastDigest Buffer.
IsoschizomersSearch for commercial isoschizomers using REsearch.
Recommended Reaction Conditions

1X FastDigest buffer or 1X FastDigest Green buffer + 0.01 mM SAM at 37°C.
1 µl of FastDigest AcuI (Eco57I) is formulated to digest up to:

  • 1 µg of lambda DNA in 15 minutes
  • 1 µg of plasmid DNA in 30 minutes
  • 0.2 µg of PCR product in 15 minutes
  • 1 µg of genomic DNA in 15 minutes or 5 µg of genomic DNA in 60 minutes

Reaction conditions

Reaction temperature Digestion time with 1 µL of FastDigest enzyme, min bp from end of DNA required for complete digestion Thermal inactivation Incubation time without star activity, hours
Lambda, 1 µg/20 µL Plasmid DNA, 1 µg/20 µL PCR product, ~0.2 µg/30 µL Genomic DNA, 1 µg/10 µL
37°C 15 30 15 15 2 65°C, 5 min 16

Methylation Effects

  • Dam: never overlaps - no effect.
  • Dcm: never overlaps - no effect.
  • CpG: never overlaps - no effect.
  • EcoKI: never overlaps - no effect.
  • EcoBI: may overlap - effect not determined.

Number of recognition sites in DNA molecules

Lambda ΦX174 M13mp18/19 pBR322 puc18/19 pUC57
40 0 0 2 2 2
pTZ19R/U pTZ57R pBluescriptIIKS(±) pBluescriptIISK(±) pACYC177 pACYC184
2 2 2 2 1 2