E2511
ExtrAvidin®
essentially salt-free, lyophilized powder
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About This Item
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form
essentially salt-free, lyophilized powder
Quality Level
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
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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