DNA Damage-Binding Protein 1 (DDB1) Antibody

Background

Damage-specific DNA binding protein 1 (DDB1) is a critical component of the ubiquitin-proteasome system, serving as a scaffold protein within the CUL4-DDB1 E3 ubiquitin ligase complex. DDB1 interacts with various substrate receptors, including members of the DCAF (DDB1 and CUL4-associated factors) family, to mediate the recognition and ubiquitination of target proteins. Its role is pivotal in regulating DNA repair, particularly nucleotide excision repair (NER), where it facilitates the removal of UV-induced photoproducts and bulky DNA adducts. DDB1 also contributes to the degradation of proteins involved in transcriptional regulation, cell cycle progression, and genome stability. Structurally, DDB1 contains WD40 domains that mediate interactions with CUL4 and substrate receptors, ensuring versatility and specificity in substrate selection. Dysregulation of DDB1 has been associated with genomic instability and cancer development. Its ubiquitous expression highlights its fundamental role in cellular homeostasis and DNA damage response pathways.