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. 40 nm Colloidal Gold-Streptavidin
    40 nm Colloidal Gold-Streptavidin
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    Sku JAC016400084
    Manufact. Sku016-400-084
    Packaging Unit1 ml
  2. Neurobiotin™ 350 Tracer
    Neurobiotin™ 350 Tracer
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    Sku VECSP-1155
    Manufact. SkuSP-1155-2
    Packaging Unit2 mg
  3. Neurobiotin™ Plus Tracer
    Neurobiotin™ Plus Tracer
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    Sku VECSP-1150
    Manufact. SkuSP-1150-5
    Packaging Unit5 mg
  4. Neurobiotin™ 488 Tracer
    Neurobiotin™ 488 Tracer
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    Sku VECSP-1125
    Manufact. SkuSP-1125-2
    Packaging Unit2 mg
  5. Neurobiotin™ Tracer
    Neurobiotin™ Tracer
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    Sku VECSP-1120
    Manufact. SkuSP-1120-50
    Packaging Unit50 mg
  6. Neurobiotin™ Tracer
    Neurobiotin™ Tracer
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    Sku VECSP-1120-20
    Manufact. SkuSP-1120-20
    Packaging Unit20 mg
  7. R.T.U. Horseradish Peroxidase Streptavidin
    Streptavidin, Horseradish Peroxidase, R.T.U. (Ready-to-Use)
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    Sku VECSA-5704
    Manufact. SkuSA-5704-100
    Packaging Unit100 ml
  8. Dylight®649 Streptavidin
    DyLight® 649 Streptavidin
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    Sku VECSA-5649
    Manufact. SkuSA-5649-1
    Packaging Unit1 mg
  9. Dylight®594 Streptavidin
    DyLight® 594 Streptavidin
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    Sku VECSA-5594
    Manufact. SkuSA-5594-1
    Packaging Unit1 mg
  10. Dylight®549 Streptavidin
    DyLight® 549 Streptavidin
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    Sku VECSA-5549
    Manufact. SkuSA-5549-1
    Packaging Unit1 mg
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