EAF1 Polyclonal Antibody - E-AB-91914

EAF1 Polyclonal Antibody

Sizes: 60μL, 120μL, 200μL

Catalogue Numbers: E-AB-91914-60, E-AB-91914-120, E-AB-91914-200

Citations, Manuals and MSDS Available upon request.

Abbreviation: EAF1

Target Synonym: EAF1

Conjugation: Unconjugated

Host: Rabbit

Species Reactivity: Human, Rat

Application: WB

Isotype: IgG

Clonality: Polyclonal

UNIProt ID: Q96JC9

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.

Concentration: 1mg/mL

Immunogen: Recombinant fusion protein of human EAF1

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

Purification Method: Affinity purification

Dilution: WB 1:500-1:2000

Calculated MW: 17kDa/29kDa

Observed MW: 29kDa

Storage: -20°C/One year. Avoid freeze / thaw cycles.

Shipping: Ice bag

Research Use Only