Escherichia coli (E. coli) is a Gram negative bacterium that is commonly found in the lower intestine of warm-blooded organisms (endotherms). Most E. coli strains are harmless, but some, such as serotype O157:H7, can cause serious food poisoning in humans, and are occasionally responsible for costly product recalls. The harmless strains are part of the normal flora of the gut, and can benefit their hosts by producing vitamin K2, or by preventing the establishment of pathogenic bacteria within the intestine. E. coli are not always confined to the intestine, and their ability to survive for brief periods outside the body makes them an ideal indicator organism to test environmental samples for fecal contamination. The bacteria can also be grown easily and its genetics are comparatively simple and easily-manipulated or duplicated through a process of metagenics, making it one of the best-studied prokaryotic model organisms, and an important species in biotechnology and microbiology. E. coli was discovered by German pediatrician and bacteriologist Theodor Escherich in 1885, and is now classified as part of the Enterobacteriaceae family of gamma-proteobacteria.
Suitable for use in ELISA. Used in immunoassays for the identification of E. coli cells. Other applications not tested.
Optimal dilutions to be determined by the researcher.
Storage and Stability:
May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
|Pool of four E. coli serotypes common in human urinary tract infections: O18:B21:, O44:K74, O112:B11, O125:B15.|
|Purified by Protein G affinity chromatography.|
|Supplied as a liquid in PBS, pH 7.4, 0.1% sodium azide. Also available without sodium azide, see E3500-13A.|
|Recognizes a surface antigen found on the following E. coli serotypes: O2a/2b (ATCC 23500), O7 (ATCC 23503), O11 (ATCC 23507), O18 (ATCC 23513), O44 (ATCC 13736), O75 (ATCC 23507), O112 (ATCC 12804), O125 (ATCC 12808). Does not react with K12 serotype. No crossreactivity to: Enterobacter aerogenes, Proteus vulgaris, Pseudomonas aeruginosa, Klebsiella pneumoniae, Serratia marcescens, Proteus mirabilis.|
|Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.|
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