Affinity Capture-Western

An interaction is inferred when a bait protein is affinity captured from cell extracts by either polyclonal antibody or epitope tag and the associated interaction partner identified by Western blot with a specific polyclonal antibody or second epitope tag. This category is also used if an interacting protein is visualized directly by dye stain or radioactivity. Note that this differs from any co-purification experiment involving affinity capture in that the co-purification experiment involves at least one extra purification step to get rid of potential contaminating proteins.

Publication

Transcription factor Sp3 represses expression of p21CIP¹ via inhibition of productive elongation by RNA polymerase II.

Valin A, Ouyang J, Gill G

Like that of many protein-coding genes, expression of the p21(CIP1) cell cycle inhibitor is regulated at the level of transcription elongation. While many transcriptional activators have been shown to stimulate elongation, the mechanisms by which promoter-specific repressors regulate pausing and elongation by RNA polymerase II (RNA PolII) are not well described. Here we report that the transcription factor Sp3 inhibits ... [more]

Mol. Cell. Biol. Apr. 01, 2013; 33(8);1582-93 [Pubmed: 23401853]

Throughput

  • Low Throughput

Curated By

  • BioGRID