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In eukaryotic cells, transcription is regulated in part by high molecular weight coactivating complexes that mediate signals between transcriptional activators and RNA polymerase. RNA polymerase II (RNAPII) holoenzyme contains numerous proteins that largely consist of RNA processing factors, RNA helicase, general transcription factors and SRB co-activating complexes. RNAPII mediated basal- and gene-specific transcriptional activation requires the association of various cofactors that includes PC4 (human Positive cofactor 4). Positive cofactor 4 interacts with the activation domain of transcription factor IIA (TFIIA) and TATA-binding protein (TBP)-associated factors (TAFs) to directly bind to double stranded DNA. Positive cofactor 4 induces both activation and repression of RNAPII basal transcription, depending on the presence or absence of these transcription factors and holoenzyme components. Addition-ally, Positive cofactor 4 is phosphorylated by TFIID and TFIIH, which releases Positive cofactor 4 from the DNA promoter region and thereby inhibits the assembly of Positive cofactor 4 into the transcriptional promoting complex and blocks transcription.
Alexa Fluor® est une marque déposée de Molecular Probes Inc., OR., USA
LI-COR® et Odyssey® sont marques déposées de LI-COR Biosciences
Informations pour la commande
Nom du produit | Ref. Catalogue | COND. | Prix HT | QTÉ | Favoris | |
Anticorps Positive cofactor 4 (H-8) | sc-166279 | 200 µg/ml | $316.00 | |||
Positive cofactor 4 (H-8): m-IgG Fc BP-HRP Kit | sc-540066 | 200 µg Ab; 10 µg BP | $354.00 | |||
Positive cofactor 4 (H-8): m-IgG2a BP-HRP Kit | sc-546845 | 200 µg Ab; 10 µg BP | $354.00 | |||
Anticorps Positive cofactor 4 (H-8) X | sc-166279 X | 200 µg/0.1 ml | $316.00 |