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Documenti fondamentali

E1131

Sigma-Aldrich

Exonuclease III from Escherichia coli BE25 /psGR3

buffered aqueous glycerol solution

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About This Item

Numero CAS:
Classificazione EC (Enzyme Commission):
Numero CE:
Numero MDL:
Codice UNSPSC:
12352204

Grado

Molecular Biology
for molecular biology

Stato

buffered aqueous glycerol solution

PM

28 kDa

N° accesso UniProt

Temperatura di conservazione

−20°C

Informazioni sul gene

Escherichia coli K12 ... xthA(946254)

Descrizione generale

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.

Applicazioni

Suitable for:
  • Production of strand specific probes
  • Preparation of single stranded templates for Sanger dideoxy sequencing
  • Site directed mutagenesis

Componenti

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.

Definizione di unità

One unit releases 1 nmole of acid-soluble nucleotides from sonicated calf thymus DNA in 30 min at 37 °C.

Codice della classe di stoccaggio

12 - Non Combustible Liquids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)


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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
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
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
Xiaofeng Wei et al.
Chemical communications (Cambridge, England), 48(49), 6184-6186 (2012-05-17)
Based on the specific folic acid-folate receptor (FA-FR) interaction, macromolecular FR can bind with FA-linked DNA-small molecule chimeras, which can prevent enzymolysis by exonuclease III (Exo III), enabling a novel fluorescence biosensor for FR to be developed using quinaldine red

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