Chromatrap® uses a solid phase porous polymer functionalised with protein A, allowing the chromatin capture to be more efficient than bead based methods.
• Levels of DNA pull down up to 25 times higher than with bead based procedures. • Excellent DNA enrichment with signal to noise ratios typically 2 to 3 times better than competing procedures. • High performance with small sample sizes; as few as 15,000 cells per assay.
The Chromatrap® approach is preferable to other methods because:
• the use of spin columns negates the use of microbeads • BioVyonTM protein A discs have a proprietary internal structure, composed of pores that have inner surfaces specifically designed to maximise chromatin capture efficiency • the disc base material is chemically inert, reducing incidences of non-specific binding • all chemical reactions take place inside the disc, therefore there is no need for suspension or re-suspension by pipette • there is no pre-blocking step required • the protocol requires washing steps that are fast, efficient and less prone to error • the ‘flow through’ characteristics of the column ensure excellent sample mixing and washing during the assay.