EAF1 Polyclonal Antibody

• Background :

  Actin is a key regulator of RNA polymerase (Pol) II-dependent transcription. Positive transcription elongation factor b (P-TEFb), a Cdk9/cyclin T1 heterodimer, has been reported to play a critical role in transcription elongation. However, the relationship between actin and P-TEFb is still not clear. In this study, actin was found to interact with Cdk9, a catalytic subunit of P-TEFb, in elongation complexes. Using immunofluorescence and immunoprecipitation assays, Cdk9 was found to bind to G-actin through the conserved Thr-186 in the T-loop. Overexpression and in vitro kinase assays showed that G-actin promotes P-TEFb-dependent phosphorylation of the Pol II C-terminal domain. An in vitro transcription experiment revealed that the interaction between G-actin and Cdk9 stimulated Pol II transcription elongation. ChIP and immobilized template assays indicated that actin recruited Cdk9 to a transcriptional template in vivo and in vitro. Using cytokine IL-6-inducible p21 gene expression system, we revealed that actin recruited Cdk9 to endogenous gene. Moreover, overexpression of actin and Cdk9 increased histone H3 acetylation and acetylized histone H3 binding to a transcriptional template through the interaction with histone acetyltransferase, p300. Taken together, our results suggested that actin participates in transcription elongation by recruiting Cdk9 for phosphorylation of the Pol II C-terminal domain, and the actin-Cdk9 interaction promotes chromatin remodeling.

• Description :

  This is a EAF1 Polyclonal Antibody from Reddot Biotech. This product is for Research Use Only.

• Synonyms :

  EAF1

• Gene ID :

  85403

• Swiss Prot :

  Q96JC9

• Reactivity :

  Human, Rat

• Immunogen :

  Recombinant fusion protein of human EAF1

• Clonality :

  Polyclonal

• Conjugation :

  Unconjugated

• Type :

  Polyclonal Antibody

• Applications :

  WB

• Purification Method :

  Affinity purification

• Assay Type :

  Antibody

• Concentration :

  1mg/mL

• Dilution :

  WB 1:500-1:2000

• Buffer :

  PBS with 0.01% thiomersal,50% glycerol, pH7.3.

• Storage Conditions :

  Store at -20°C Valid for 12 months. Avoid freeze / thaw cycles.

• Observed Molecular Weight :

  58kDa

• Host or Source :

  Rabbit

• Isotype :

  IgG