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MilliporeSigma

R6265

Sigma-Aldrich

EcoR I from Escherichia coli BS5

Restriction Enzyme

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About This Item

CAS Number:
EC Number:
EC Number:
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.53
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grade

Molecular Biology

Quality Level

form

buffered aqueous glycerol solution

concentration

10,000 units/mL

shipped in

wet ice

storage temp.

−20°C

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Application

EcoRI is a restriction endonuclease that is used in molecular biology applications to cleave DNA at the recognition site 5′-G/AATTC-3′, generating fragments with 5′-cohesive termini.

Biochem/physiol Actions

Recognition sequence: 5′-G/AATTC-3′
Cutting results: a 2-10-fold EcoR I overdigestion of 1 μg λ DNA substrate results in 100% cutting
Heat inactivation: 65 °C for 20 minutes.

Physical form

Solution in 10 mM Tris-HCl, pH 7.2 , 1 mM EDTA, 200 mM NaCl , 0.5 mM dithioerythritol, 50% glycerol (v/v), 0.2% Triton X- 100 (v/v), 4°C

Other Notes

Comment: Avoid suboptimal reaction conditions such as low salt, high pH (>8.0) and high glycerol (>5%) as they will alter EcoRI specificity and precipitate star activity.
One unit is the enzyme activity that completely cleaves 1 mg of λDNA in 1 hour at 37 °C in a total volume of 50 ml of 1x digestion buffer SH for restriction enzymes. 1 mg pBR322 DNA is digested completely by 2 units of EcoR I.
Supplied with 10x Restriction Enzyme Buffer SH (B3657).

pictograms

Health hazard

signalword

Danger

hcodes

Hazard Classifications

Resp. Sens. 1

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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J Hedgpeth et al.
Proceedings of the National Academy of Sciences of the United States of America, 69(11), 3448-3452 (1972-11-01)
The sequence of DNA base pairs adjacent to the phosphodiester bonds cleaved by the RI restriction endonuclease in unmodified DNA from coliphage lambda has been determined. The 5'-terminal nucleotide labeled with (32)P and oligonucleotides up to the heptamer were analyzed
C Kessler et al.
Gene, 92(1-2), 1-248 (1990-08-16)
The properties and sources of all known class-I, class-II and class-III restriction endonucleases (ENases) and DNA modification methyltransferases (MTases) are listed and newly subclassified according to their sequence specificity. In addition, the enzymes are distinguished in a novel manner according
Cong Zhu et al.
Nucleic acids research, 41(4), 2455-2465 (2013-01-11)
Zinc-finger nucleases (ZFNs) have been used for genome engineering in a wide variety of organisms; however, it remains challenging to design effective ZFNs for many genomic sequences using publicly available zinc-finger modules. This limitation is in part because of potential
Annabel A Ferguson et al.
Methods in molecular biology (Clifton, N.J.), 940, 87-102 (2012-10-30)
The generation of transgenic animals is an essential part of research in Caenorhabditis elegans. One technique for the generation of these animals is biolistic bombardment involving the use of DNA-coated microparticles. To facilitate the identification of transgenic animals within a
TALENs and ZFNs are associated with different mutation signatures.
Yongsub Kim et al.
Nature methods, 10(3), 185-185 (2013-02-12)

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