TransAM Transcription Factors ELISAs
Transcription factors are DNA-binding proteins that tightly regulate gene expression. They consist of two distinct domains – one that displays high affinity for a specific DNA sequence and one that confers transcriptional activity. Transcription factors are activated by phosphorylation of specific residues or by processing bound inhibitory proteins. Understanding and quantifying transcription factors is essential for the study of cell functions in relation to differentiation, brain activity, immune response, inflammation and various disease states.
TransAM® Kits are sensitive, non-radioactive transcription factor ELISA kits that facilitate the study of transcription factor activation in mammalian tissue and cell extracts. Assays are available for over 40 different targets; below are the best seller produts. For other targets, please contact us.
Click on aditional information for complete assay details:TransAM® Method
Why use TransAM® transcription factor ELISAs?
- Up to 100-fold more sensitive than gelshift assays
- Eliminates the use of radioactivity and the need to run gels
- Results in less than five hours
- Colorimetric readout enables easy, quantitative analysis with spectrophotometry at 450 nm
- 96-stripwell format enables both high and low throughput
How TransAM® transcription factor ELISAs work ?
The TransAM format is perfect for assaying transcription factor binding to a consensus-binding site. TransAM Kits contain a 96-stripwell plate to which the consensus-binding site oligo has been immobilized. Activated nuclear extract is added to each well and the transcription factor of interest binds specifically to this bound oligonucleotide. A primary antibody specific for an epitope on the bound and active form of the transcription factor is then added followed by subsequent incubation with secondary antibody and Developing Solution to provide an easily quantified, sensitive colorimetric readout (Figure 1).
Figure 1: Flow chart of the TransAM process. Activated transcription factor in the cell extract binds to the consensus-binding site on the oligo immobilized in the well. Incubation with the supplied primary and secondary antibodies specifically quantifies the amount of activated transcription factor.