Eliminating Free Biotin Interference for Accurate Diagnostic Results
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High Biotin- Binding Capacity
How to block non specific biotin ?
Adding BBS to the cell culture irreversibly binds free biotin, preventing it from breaking the avidin biotinylated receptor complexes. This allows for a 1-column 3 steps affinity purification process on agarose-avidin chromatography columns.
1-column 3 steps process for cell culture media purification. Biotin Blocking System serves as safeguard for column integrity and performance.
Step 0
Introduced in slight excess to the cell culture (5-10%), the Biotin Blocking System irreversibly binds free biotin. A standard HABA test can easily verify the results.
Step 1
The avidin-agarose chromatography column is activated with the ligandspecific biotinylated receptors (antibody-specific biotinylated antigens for example).
Step 2
The Biotin blocking System saturated culture medium is passed through and rinsed with an adapted running buffer, leaving the specific ligand-receptors immobilized. no interaction between the biotin from the cell culture with the avidin-agarose chromatography column. All ligand-specific biotinlated receptor remains in place for the binding with the ligand of interest.
Step 3
The ligand of interest is then eluted out of the affinity column with the appropriate releasing buffer.