Disco-interacting protein 2 homolog B (DIP2B)

Disco-interacting protein 2 homolog B (DIP2B) is a member of the disco-interacting protein homolog 2 family encoded by the DIP2B gene, located on human chromosome 12 near a folate-sensitive fragile site[1][4][7]. The protein contains binding sites for the transcriptional regulator DNA methyltransferase 1 associated protein 1 (DMAP1) and AMP-binding motifs, implicating a role in DNA methylation and possibly metabolism[1][7]. DIP2B is highly expressed in various tissues, especially in neural tissue, and is essential for axonal development and neural differentiation, in part through interaction with α-tubulin and regulation of cytoskeletal architecture[2]. Loss or disruption of DIP2B function is linked to abnormal axonal outgrowth, impaired synaptic transmission, and neurocognitive deficits, such as those associated with CGG-repeat expansion at the FRA12A fragile site[1][6]. Beyond the nervous system, DIP2B plays roles in cell migration, invasion, and epithelial–mesenchymal transition, making it relevant to cancer susceptibility, particularly in colorectal and breast cancers[1][5]. Genomic studies also implicate DIP2B in cardiovascular disease via regulatory variants in super enhancer regions[1]. Despite these associations, DIP2B is not currently recognized as a therapeutic target (e.g., receptor, transporter, or enzyme), and no approved drugs are known to act directly on DIP2B[7].

Other names

DIP2BKIAA1463FLJ34278DIP2 homolog BDIP2 disco-interacting protein 2 homolog B