Avidin/Streptavidin-Biotin Reagents

Avidin/Streptavidin – Biotin Reagents

Avidin is a tetrameric protein originally isolated from chicken egg white evincing high binding affinity to biotin (Vitamin B7, earlier Vitamin H). Streptavidin on the other hand is of bacterial origin and has been isolated from bacterium Streptomyces avidinii. Similarly to avidin, streptavidin also shows high affinity to biotin, although both proteins share only about 30% homology. Despite their very similar secondary, tertiary and quaternary structure, both avidin and streptavidin vary from each other. Avidin is a larger, glycosylated molecule, which may cause nonspecific binding, especially with lectins. At a neutral pH it carries a positive charge, which may interact with negatively charged molecules such as DNA in the nucleus.

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  1. Streptavidin, CY3
    Streptavidin, CY3
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    Sku VECSA-1300
    Manufact. SkuSA-1300-1
    Packaging Unit1 mg
  2. Alkaline Phosphatase Avidin D
    Alkaline Phosphatase Avidin D
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    Sku VECA-2100
    Manufact. SkuA-2100-100
    Packaging Unit100 Units
  3. Horseradish Peroxidase Avidin D (Av-HRP), Concentrate, for ELISAs and Blots
    Horseradish Peroxidase Avidin D (Av-HRP), Concentrate, for ELISAs and Blots
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    Sku VECA-2014
    Manufact. SkuA-2014-5
    Packaging Unit5 mg
  4. Horseradish Peroxidase Avidin D (Av-HRP), Concentrate, for IHC
    Horseradish Peroxidase Avidin D (Av-HRP), Concentrate, for IHC
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    Sku VECA-2004
    Manufact. SkuA-2004-5
    Packaging Unit5 mg
  5. Avidin D
    Avidin D
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    Sku VECA-2000
    Manufact. SkuA-2000-10
    Packaging Unit10 mg
  6. Streptavidin, FITC
    Streptavidin, FITC
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    Sku SANMSA1001
    Manufact. SkuMSA1001
    Packaging Unit1 ml
  7. avidin-APC
    avidin-APC
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    Sku SACSC-2898
    Manufact. Skusc-2898
    Packaging Unit100 tests in 2 ml
  8. avidin-FITC
    avidin-FITC
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    Sku SACSC-2865
    Manufact. Skusc-2865
    Packaging Unit100 tests in 2 ml
  9. Alexa Fluor® 790-conjugated Streptavidin
    Alexa Fluor® 790-conjugated Streptavidin
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    Sku JAC016650084
    Manufact. Sku016-650-084
    Packaging Unit0,5 mg
  10. Alexa Fluor® 680-conjugated Streptavidin
    Alexa Fluor® 680-conjugated Streptavidin
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    Sku JAC016620084
    Manufact. Sku016-620-084
    Packaging Unit0,5 mg
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