missing translation for 'onlineSavingsMsg'
Learn More

Invitrogen™ Avidin Protein and Conjugates

Perform Western blot, ELISA or other biotin-based detection methods using these purified and HRP-, AP- or FITC-labeled avidin molecules.

Brand:  Invitrogen™ 21221

Code : PN

Additional Details : CAS Number : 110-26-9 Weight : 0.80000kg

Product Code. 11881185

  • £183.85 / 5mg

EU Stock 1
Add to basket



Avidin from chicken egg whites is a glycoprotein that effectively binds biotin, a tag that is frequently used to tag antibodies and other probes for immunodetection methods. Pure avidin is a key component in certain immunohistochemistry (IHC) methods. Alkaline phosphatase (AP) and horseradish peroxidase (HRP) conjugates of avidin are useful for Western blotting or ELISA detection with appropriate enzyme substrates.


  • Native avidin – glycoprotein from chicken egg whites, 67kDa, pI equals 10

  • Soluble – glycosylation and isoelectric point renders avidin more soluble than streptavidin

  • Affordable – significantly less expensive than recombinant streptavidin

  • ABC staining – avidin is usually preferred over streptavidin for avidin-biotin complex (ABC) staining methods in immunohistochemistry (IHC)

  • Pure protein and conjugates – choose pure, unconjugated avidin for use in ABC staining or peroxidase or alkaline phosphatase forms for membrane and plate-based assays



Pierce Avidin, Fluorescein (FITC) Conjugated
Approx. 5mg/mL in buffered saline solution

Technical Documents