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Sigma-Aldrich

Escherichia coli

Strain K12, lyophilized cells

Synonym(s):

E. coli K-12

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About This Item

MDL number:
UNSPSC Code:
12352204
NACRES:
NA.83

Quality Level

sterility

non-sterile (not processed or packaged aseptically)

form

lyophilized cells

suitability

not intended for starter culture

storage temp.

−20°C

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General description

Escherichia coli (E.coli) is a non-spore forming, Gram-negative, rod-shaped facultative anerobe, which is found in the human gastrointestinal tract. It belongs to the family of Enterobacteriaceae. E.coli is chemoorganotrophic and grows at 37°C. Pathogenic E.coli strains is associated with diarrhea, septicemia, meningitis and urinary tract infections. It inhibits the colonization of the gut by harmful bacteria. E.coli acts as an indicator of fecal contamination.

Other Notes

A mutant which is rich in alkaline phosphatase.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Multiple antibiotic resistance indexing of Escherichia coli to identify high-risk sources of fecal contamination of foods.
Krumperman PH, et al.
Applied and Environmental Microbiology, 46(1), 165-170 (1983)
Joseph M Autry et al.
Analytical biochemistry, 610, 113965-113965 (2020-09-22)
We have analyzed protein expression and enzyme activity of the sarcoplasmic reticulum Ca2+-transporting ATPase (SERCA) in horse gluteal muscle. Horses exhibit a high incidence of recurrent exertional rhabdomyolysis, with myosolic Ca2+ proposed, but yet to be established, as the underlying
Min-Hui Zhao et al.
Biosensors & bioelectronics, 150, 111865-111865 (2019-11-20)
We develop a low-background electrochemical biosensor for one-step detection of uracil DNA glycosylase (UDG) based on the host-guest interaction and iron-embedded nitrogen-rich carbon nanotube (Fe-N-C) that mimics enzyme-mediated electrocatalysis to achieve signal amplification. In this work, Fe-N-C is initially immobilized
Tássia Silva Tavares et al.
Molecules (Basel, Switzerland), 25(2) (2020-01-16)
Owing to their high surface area, stability, and functional groups on the surface, iron oxide hydroxide nanoparticles have attracted attention as enzymatic support. In this work, a chemometric approach was performed, aiming at the optimization of the horseradish peroxidase (HRP)
Pei-Gee Yap et al.
Foods (Basel, Switzerland), 9(9) (2020-09-24)
Active fragments (bioactive peptides) from the chicken egg white proteins were expected to exert tyrosinase inhibitory activities in which skin hyperpigmentation could be prevented. Egg white was hydrolyzed by trypsin, chymotrypsin and the combination of both enzymes. The enzyme treatments

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