Template:SBB-Protocols Assay3
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Silver Biomineralization Assay
Here we present an assay to determine whether the AG4 Silver binding peptide is present in the outer membrane of E.coli.
Materials
Procedure
- Grow the cells
- Wash with Tris buffer
- Wash with silver nitrate
- Look for colour change
Controls
- Chemically reduce silver nitrate to precipitate silver (tells us silver nitrate is precipitating)
- Lyse cells over-expressing AG4 and run assay (tells us if AG4 is precipitating silver)
- Wash non-AG4 cells with silver nitrate and look for colour change (tells us if precipitation occurs without AG4)