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Ataxin-3 pseudogene

Molecular classification: Pseudogene, Typically further classified as either "processed pseudogene" (from retrotransposition) or "nonprocessed/duplicated pseudogene" (from segmental duplication); the specific type for this locus requires further annotation

Overview

The ataxin-3 pseudogene (ENSG00000258639, LOC100418768) is a DNA sequence in the human genome similar to the functional ataxin-3 gene (ATXN3). Pseudogenes like this arise through duplication or retrotransposition but accumulate mutations that prevent production of a functional protein. While most pseudogenes are considered nonfunctional, some show low-level, tissue-specific transcription and can produce non-coding RNAs that modulate gene expression, possibly acting as endogenous RNA competitors or participating in chromatin regulation. However, this locus is not considered a drug target, has no known interacting drugs, and is not associated directly with any disease or therapeutic safety concerns.

Other names: LOC100418768ENSG00000258639

Biological functions

Most pseudogenes lack direct biological function.Some can produce non-coding RNAs that may regulate expression of their parent gene as competing endogenous RNAs (ceRNAs).Some can influence gene expression via small RNAs (sRNAs) or RNA interference mechanisms, sometimes modifying chromatin structure.Some can potentially affect epigenetic regulation, e.g., through local enrichment of histone mark H3K9me3, but roles are context- and locus-dependent.

Disease associations

Generally not directly implicated in disease.Pseudogene-derived RNAs may indirectly affect parental gene expression; ATXN3 itself is implicated in neurodegeneration (spinocerebellar ataxia type 3/SCA3), but this is not established for the pseudogene form.No disease directly associated with the ataxin-3 pseudogene is reported.

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