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Overview

Properties

  • FormLiquid
  • Storage instructionsStore at +4°C.
  • Storage bufferPreservative: 0.02% Sodium Azide
    Constituents: PBS
  • Concentration information loading...
  • PurityImmunogen affinity purified
  • Purification notesAffinity chromatography purified via peptide column
  • Primary antibody notes Streptavidin is a tetrameric protein purified from Streptomyces avidinii. It has wide use in numerous molecular biological protocols dues to its strong affinity for biotin. The original Strep-tag is a nine amino acid peptide with high specificity and affinity towards streptavidin. The addition of this tag to the C-terminus of recombinant proteins allowed the simple purification of protein by use of affinity columns. It was re-engineered (and re-named Strep-tag II) to allow it to also placed at the N-terminus of recombinant proteins.
  • Clonality Polyclonal
  • IsotypeIgG
  • Research Areas

Applications

Our Abpromise guarantee covers the use of ab76949 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Notes
WB WB: Use a concentration of 0.5 - 1 µg/ml. Predicted molecular weight: 24 kDa.

Target

  • RelevanceStreptavidin is a tetrameric protein purified from Streptomyces avidinii. It has wide use in numerous molecular biological protocols dues to its strong affinity for biotin. The original Strep-tag (AWRHPQFGG) was a nine amino acid peptide with high specificity and affinity towards streptavidin which allows the simple purification of protein by use of affinity columns, but required addition to only the C-terminus of recombinant proteins. To also allow a Strep-tag to be placed at the N-terminus of recombinant proteins, it was re-engineered and re-named Strep-tag II.
  • Alternative names
      anti-Strep-Tag II antibodyStrep-Tag II antibodyStrep-Tag II antibody antibodyStrep-Tag IIantiboy antibody

Anti-Strep-tag II antibody images

  • All lanes : Anti-Strep-tag II antibody (ab76949) at 1 µg/ml

    Lane 1 : StreptII tagged recombinant protein at 0.005 µg
    Lane 2 : StrepII tagged recombinant protein at 0.025 µg


    Predicted band size : 24 kDa

References for Anti-Strep-tag II antibody (ab76949)

This product has been referenced in:
  • Leslie Pedrioli DM  et al. Generic and personalized RNAi-based therapeutics for a dominant-negative epidermal fragility disorder. J Invest Dermatol 132:1627-35 (2012). WB . Read more (PubMed: 22402445) »

See 1 Publication for this product

Product Wall

Displaying 1 - 9 of 9 results for Abreviews and Q&A

Application Western blot
Sample Escherichia coli Recombinant protein (Strep-tagged recombinant protein)
Loading amount 0.5 µg
Specification Strep-tagged recombinant protein
Gel Running Conditions Reduced Denaturing (10% Tris-Glycine gel)
Blocking step Milk as blocking agent for 30 minute(s) · Concentration: 5% · Temperature: 25°C
Username

Verified customer

Submitted Jan 16 2013

Application Western blot
Sample Human Cell lysate - other (cell lysate containing expressed recombinant prote)
Loading amount 25 µg
Specification cell lysate containing expressed recombinant prote
Gel Running Conditions Reduced Denaturing (Bis-Tris 4-20%)
Blocking step Milk as blocking agent for 30 minute(s) · Concentration: 5% · Temperature: 22°C
Username

Verified customer

Submitted Dec 03 2012

Vielen Dank für Ihre Anfrage.

Wir haben verschiedene Antikörper die ich Ihnen in diesem Fall empfehlen kann. Die drei Produkte unterscheiden sich in der Hostspezies.

1. Chicken polyclonal Secondary Antibody to Rabbit IgG - H&am...

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Thank you for your reply.

I have processed your request to receive ab119810 as free of charge replacement for ab76949. Currently, ab119810 is out of stock, but we expect to be able to ship it to you by 11th May, I do apologize for this delay. Yo...

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Thank you for your reply.

Both antibodies should work equally as well for you. I was suggested ab119810, as it is the only other Strep tag antibody we have in stock and the only information that we have on it, is what is already on the webpages....

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Thank you for your reply.

I think the best way forward is too either replace or refund the cost of ab76949. An alternative to ab76949 is ab119810:

http://www.abcam.com/Strep-tag-II-antibody-ab119810.html

Please let me know ho...

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Thank you for contacting Abcam.

I am sorry about the issue you are having with ab76949 in western blotting. The antibody is covered under our Abpromise for six months and is guaranteed to work in western blot. If we cannot resolve the issue you ...

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Vielen Dank für Ihren Anruf.

Wie versprochen habe ich genauer in den Laboren nachgefragt, die unsere Streptavidin-Antikörper herstellen, und dabei hat sich herausgestellt, dass unsere monoklonalen anti-Streptavidin-Antikörper (ab10020-10023), d...

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We have two different versions of the tag: ab76950- against GGGWSHPQFEK ab76949- against ASWSHPQFEKGA Both contain the tag sequence WSHPQFEK along with extra inert amino acids to make the sequence longer for conjugation chemistry to the carrier prote...

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Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"