What is the function of Bromodomain?

What is the function of Bromodomain?

Bromodomain proteins are involved in a diverse range of functions, such as acetylating histones, remodeling chromatin, and recruiting other factors necessary for transcription. These proteins thus play a critical role in the regulation of transcription.

How do BET inhibitors work?

BET inhibitors are a class of drugs that reversibly bind the bromodomains of Bromodomain and Extra-Terminal motif (BET) proteins BRD2, BRD3, BRD4, and BRDT, and prevent protein-protein interaction between BET proteins and acetylated histones and transcription factors.

What are bet proteins?

BET proteins can recruit transcription factors in distant areas from the promoter of genes involved in different cellular processes. BET proteins, which are epigenetic regulators of gene transcription, are strongly implicated in the regulation of cell growth, differentiation, and inflammation (Figure 3).

Is BRD4 a transcription factor?

BRD4 is a transcriptional and epigenetic regulator that plays a pivotal role during embryogenesis and cancer development. As the other members of the Bromodomains and Extraterminal (BET) family (BRD2, BRD3 and the testis-ovary specific BRDT), BRD4 is characterized by two tandem bromodomains (BD1, BD2).

Why is it called bromodomain?

Tamkun and colleagues studying the drosophila gene Brahma/brm, and showed sequence similarity to genes involved in transcriptional activation. The name “bromodomain” is derived from the relationship of this domain with Brahma and is unrelated to the chemical element bromine.

Is bromodomain a motif?

The bromodomain is a conserved protein motif found in all eukaryotes and is the only known protein module that binds acetylated lysine residues (Mujtaba, Zeng, & Zhou, 2007; Sanchez & Zhou, 2009).

Who makes jq1?

James Bradner laboratory
It was developed by the James Bradner laboratory at Brigham and Women’s Hospital and named after chemist Jun Qi. The chemical structure was inspired by patent of similar BET inhibitors by Mitsubishi Tanabe Pharma [WO/2009/084693]….JQ1.

What is a bromodomain protein BRD4?

Bromodomain-containing protein 4 (BRD4) is an epigenetic reader that recognizes histone proteins and acts as a transcriptional regulator to trigger tumor growth and the inflammatory response. The pan-bromodomain and extra-terminal domain (BET) inhibitor, (+)-JQ1 (1), was reported to inhibit angiogenesis.

What are bet Bromodomains?

The bromodomain is a conserved sequence of ~110 amino acids that structurally forms 4 α-helices (αZ, αA, αB, and αC) and 2 loops (ZA and BC), and can bind to acetyl-lysine residues in histones and other proteins (Figure 2) [37,38].

Where is BRD4 located?

Bromodomain-containing protein 4 is a protein that in humans is encoded by the BRD4 gene. BRD4 is a member of the BET (bromodomain and extra terminal domain) family, which also includes BRD2, BRD3, and BRDT….

What is a Bromodomain protein BRD4?

Is lysine acetylated?

Once a protein is properly localized, acetylation of key lysine residues can occur enzymatically or spontaneously to influence its intermolecular interactions, enzymatic functions, localization, and eventual degradation. Post-translational acetylation of lysine residues will be the primary focus of the current review.