Transcription factor p65 DNA-binding domain (p65 DBD)

The Transcription factor p65 DNA-binding domain is a critical structural component of the RELA (p65) subunit, which is a member of the NF-κB transcription factor family. This domain, located within the N-terminal portion of the Rel homology domain (RHD), is responsible for the sequence-specific recognition and binding of κB DNA elements in the promoters of target genes. By binding to these sites, p65 regulates the expression of numerous genes involved in the inflammatory response, immune system development, and cell survival. Dysregulation of p65 DNA binding is a hallmark of many cancers and chronic inflammatory conditions, where it promotes uncontrolled cell growth and prevents apoptosis. Consequently, the DNA-binding domain has emerged as a significant therapeutic target, with various small molecules and natural products being developed to inhibit its activity through covalent modification or allosteric interference. However, the broad physiological importance of NF-κB signaling makes the development of selective, non-toxic inhibitors a major challenge in clinical translation.

Other names

RELA DNA-binding domainp65 DNA-binding domainRel homology domain of p65NFKB3 DNA-binding domainNuclear factor NF-kappa-B p65 subunit DNA-binding domain

Direct inhibition of DNA binding, allosteric inhibition of dimerization, covalent modification of cysteine residues (e.g., Cys38), and inhibition of nuclear translocation.