Dyskerin (None)

Dyskerin is an essential, evolutionarily conserved enzyme that serves as the catalytic subunit of the H/ACA ribonucleoprotein (RNP) complex. It catalyzes pseudouridylation, the most common post-transcriptional modification of RNA, which stabilizes RNA molecules and regulates processes such as ribosome biogenesis and pre-mRNA splicing. As a core component of the H/ACA RNP, dyskerin guides the modification of ribosomal RNA (rRNA) and small nuclear RNA (snRNA), impacting gene expression and translation efficiency. Dyskerin is also a critical component of the telomerase holoenzyme, where it binds to and stabilizes the telomerase RNA component (TERC/hTR), essential for telomere maintenance. Mutations in the DKC1 gene, which encodes dyskerin, cause X-linked dyskeratosis congenita, a multisystem disorder characterized by bone marrow failure, abnormal skin pigmentation, and predisposition to cancer. Dyskerin’s multifaceted roles in RNA modification and telomere biology make it a molecule of significant interest in both basic biology and disease research, though targeting it therapeutically remains challenging due to its essential cellular functions[1][2][3].

Other names

H/ACA ribonucleoprotein complex subunit 4NAP57CBF5 (in yeast)NOP60B (in Drosophila)pseudouridine synthase 1

no drugs specifically targeting dyskerin yet; potential therapeutic strategies might aim to restore dyskerin function or stabilize telomerase RNA component in dyskeratosis congenita