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E2511

Sigma-Aldrich

ExtrAvidin®

essentially salt-free, lyophilized powder

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About This Item

MDL number:
MFCD00163600
UNSPSC Code:
12352203
NACRES:
NA.46

form

essentially salt-free, lyophilized powder

Quality Level

200

technique(s)

dot blot: suitable
immunohistochemistry: suitable
indirect ELISA: suitable
radioimmunoassay: suitable

shipped in

wet ice

storage temp.

2-8°C

Specificity

Binding Activity: at least 10 μg biotin per mg

Application

ExtrAvidin® has been used to tetramerize aliquots to generate HLA-A2 tetramers.

Biochem/physiol Actions

ExtrAvidin® is prepared from egg white avidin. It is a tetrameric protein containing four high affinity binding sites for biotin. It combines the high specific activity of avidin with the low background staining of streptavidin, a biotin binding protein produced by the bacteria Streptomyces avidinii. It binds biotin with the high affinity of egg white avidin, however, it does not exhibit the unwanted non-specific binding reported for egg white avidin at physiological pH, such as the staining of mast cells.

Other Notes

A modified form of affinity purified egg white avidin.

Legal Information

ExtrAvidin is a registered trademark of Merck KGaA, Darmstadt, Germany

Disclaimer

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

E2511-5MG-PW:
E2511-250UG-PW:
E2511-2MG-PW:
E2511-1MG:
E2511-1MG-PW:
E2511-5MG:
E2511-2MG:
E2511-250UG:
E2511-VAR:
E2511-BULK:

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Certificates of Analysis (COA)

Lot/Batch Number
087M4824V
022M4783V
077M4832V
017M4750V
061M4793V

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Hanwei Gao et al.
Proceedings of the National Academy of Sciences of the United States of America, 105(51), 20146-20151 (2008-12-17)
Surface plasmon polaritons (SPPs) are responsible for exotic optical phenomena, including negative refraction, surface enhanced Raman scattering, and nanoscale focusing of light. Although many materials support SPPs, the choice of metal for most applications has been based on traditional plasmonic
Demin Li et al.
Cancer research, 77(10), 2699-2711 (2017-04-02)
The tumor suppressor p53 is widely dysregulated in cancer and represents an attractive target for immunotherapy. Because of its intracellular localization, p53 is inaccessible to classical therapeutic monoclonal antibodies, an increasingly successful class of anticancer drugs. However, peptides derived from
Development of a T-cell Receptor Mimic Antibody against Wild-Type p53 for Cancer Immunotherapy
Li D, et al.
Cancer research, 77(10), 2699-2711 (2017)
E O'Connor et al.
Journal of immunological methods, 229(1-2), 155-160 (1999-11-11)
The ability to detect a protein is always limited to the sensitivity of the assays available. Progress in improving the sensitivity of protein detection will allow a more complete understanding of biological systems. Of particular interest to the field of
John E G McCarthy et al.
Methods in enzymology, 430, 247-264 (2007-10-05)
A growing number of biophysical techniques use immobilized reactants for the quantitative study of macromolecular reactions. Examples of such approaches include surface plasmon resonance, atomic force microscopy, total reflection fluorescence microscopy, and others. Some of these methods have already been

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