E1131
Exonuclease III from Escherichia coli BE25 /psGR3
buffered aqueous glycerol solution
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About This Item
CAS Number:
UNSPSC Code:
12352204
EC Number:
232-912-1
MDL number:
grade
Molecular Biology
form
buffered aqueous glycerol solution
mol wt
28 kDa
UniProt accession no.
storage temp.
−20°C
Gene Information
Escherichia coli K12 ... xthA(946254)
General description
A 3′→5′ exonuclease which catalyzes the removal of mononucleotides from the 3′-end of dsDNA. The enzyme also has apurinic and apyrimidinic endonuclease, 3′-DNA phosphatase, and RNase H activities. Activity is strongly dependent on temperature, salt concentration, and the ratio of enzyme to DNA, therefore reaction conditions must be optimized for specific applications.
Application
Suitable for:
- Production of strand specific probes
- Preparation of single stranded templates for Sanger dideoxy sequencing
- Site directed mutagenesis
Other Notes
Exonuclease III is supplied as a solution in 5 mM potassium phosphate (pH 6.5), 200 mM KCl, 0.05 mM EDTA, 5 mM 2-mercaptoethanol, 200 μg/ml BSA, and 50% glycerol.
One unit releases 1 nmole of acid-soluble nucleotides from sonicated calf thymus DNA in 30 min at 37 °C.
Storage Class
12 - Non Combustible Liquids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
Regulatory Information
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L H Guo et al.
Nucleic acids research, 10(6), 2065-2084 (1982-03-25)
We describe improve enzymatic methods for sequencing method for sequencing DNA. They are based on partial digestion of duplex DNA with exonuclease III to produce DNA molecules with 3' ends shortened to varying lengths, followed by repair synthesis to extend
Ming Luo et al.
Chemical communications (Cambridge, England), 48(59), 7416-7418 (2012-06-21)
An amplified multiplexed DNA detection biosensor has been developed, which combines the unique cleavage function of exonuclease III (Exo III) with the separating ability of magnetic microparticles (MMPs). By using different fluorophores, the multiplexed detection of DNA is demonstrated.
Sai Bi et al.
Chemical communications (Cambridge, England), 48(7), 1018-1020 (2011-12-07)
The network consisting of three kinds of unlabeled stem-loop DNA molecular beacons (MBs) is activated by target DNA in the presence of exonuclease-III (Exo-III), achieving the concept of exonuclease-assisted cascaded recycling amplification (Exo-CRA) for DNA detection with a wide dynamic
Ying Chen et al.
Chemical communications (Cambridge, England), 47(48), 12798-12800 (2011-11-15)
The presence of exonuclease III leads to direct recycling and reuse of the target DNA, which in turn results in substantial signal amplification for highly sensitive, label-free impedimetric detection of specific DNA sequences.
Peng Hu et al.
Biosensors & bioelectronics, 34(1), 83-87 (2012-03-03)
We report here a graphene oxide (GO)-based fluorescent aptasensor for adenosine detection by employing exonuclease III (Exo III) as a signal amplifying element. In the absence of adenosine, the adenosine aptamers hybridized with the complementary DNA (cDNA), and the Exo
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