SNAP-ChIP spike-in panels for validating ChIP antibody specificity against off-target binding
When you want to validate ChIP-grade antibody specificity, SNAP-ChIP spike-in panels are mixtures of modified recombinant nucleosomes with defined PTM combinations. Adding the spike-in to your IP reveals off-target binding to non-cognate modifications in your real samples. Run a SNAP-ChIP calibration before scaling any chromatin profiling experiment.
Pick panel by experiment.
- Methylation panels. For methylation-mark mapping.
- Acetylation panels. For acetylation-mark mapping.
- Combinatorial panels. For mixed PTM combinations.
- Validated antibody catalogue. Covers the major histone modifications. Off-catalogue antibodies must be validated independently.
- Use. Run SNAP-ChIP spike-in calibration first for any chromatin profiling experiment that will be published or scaled. Antibody specificity is the single biggest source of irreproducibility in the field.
EpiCypher supplies SNAP-ChIP.