Telomerase Cajal body protein 1 (WRAP53)

Telomerase Cajal body protein 1 (WRAP53) is a multifunctional protein encoded by the *WRAP53* gene, which also produces a natural antisense RNA transcript. The WRAP53 protein—also known as WDR79, TCAB1, or WRAP53β—is a WD40-repeat, scaffold-type protein essential for several nuclear processes, including telomerase complex assembly and trafficking, maintenance and organization of Cajal bodies, and recruitment of factors critical for DNA double-strand break repair. WRAP53 mediates localization of small Cajal body RNAs (scaRNAs) and the telomerase RNA template to Cajal bodies, ensuring telomere elongation and genome maintenance. The gene’s antisense transcript (WRAP53α) regulates the tumor suppressor p53 by stabilizing its mRNA. Mutations or altered expression of WRAP53 are linked to cancer, premature aging syndromes (such as dyskeratosis congenita), and potentially neurodegeneration. No therapeutics currently target WRAP53 directly, but disease relevance is high given its central nuclear functions[1][2][3][4][6].

Other names

WRAP53WD repeat-containing protein 79TCAB1WDR79WRAP53βTelomerase Cajal body protein 1WD repeat-containing antisense to TP53WD-encoding RNA antisense to p53DKCB3FLJ10385WD40 repeat-containing protein antisense to TP53WD40 protein Wrap53

Not applicable (no drug mechanism directly targeting WRAP53 established); conceptually, inhibition or stabilization of WRAP53 could affect telomerase activity, p53 pathway, or DNA repair—but no therapies are yet in use or clinical testing targeting WRAP53 specifically.