Which is best, Streptavidin or anti-Biotin?
Most users report anti-Biotin conjugates give superior labelling to Streptavidin and we would recommend anyone trying a biotinylated system for the first time, to use anti-Biotin. We have found higher labelling with Streptavidin at pH5, but we would advise caution at this pH with regards to non-specific labelling.