Probable helicase senataxin - Q7Z333 (SETX_HUMAN)


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Probable RNA/DNA helicase involved in diverse aspects of RNA metabolism and genomic integrity. Plays a role in transcription regulation by its ability to modulate RNA Polymerase II (Pol II) binding to chromatin and through its interaction with proteins involved in transcription (PubMed:19515850, PubMed:21700224). Contributes to the mRNA splicing efficiency and splice site selection (PubMed:19515850). Required for the resolution of R-loop RNA-DNA hybrid formation at G-rich pause sites located downstream of the poly(A) site, allowing XRN2 recruitment and XRN2-mediated degradation of the downstream cleaved RNA and hence efficient RNA polymerase II (RNAp II) transcription termination (PubMed:19515850, PubMed:21700224, PubMed:26700805). Required for the 3' transcriptional termination of PER1 and CRY2, thus playing an important role in the circadian rhythm regulation (By similarity). Involved in DNA double-strand breaks damage response generated by oxidative stress (PubMed:17562789). In association with RRP45, targets the RNA exosome complex to sites of transcription-induced DNA damage (PubMed:24105744). Plays a role in the development and maturation of germ cells: essential for male meiosis, acting at the interface of transcription and meiotic recombination, and in the process of gene silencing during meiotic sex chromosome inactivation (MSCI) (By similarity). May be involved in telomeric stability through the regulation of telomere repeat-containing RNA (TERRA) transcription (PubMed:21112256). Plays a role in neurite outgrowth in hippocampal cells through FGF8-activated signaling pathways. Inhibits retinoic acid-induced apoptosis (PubMed:21576111). UniProt
Pathway Maps
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Subunit Structure
Homodimer (PubMed:24244371). Interacts with PER2; the interaction inhibits termination of circadian target genes (By similarity). Interacts with CHD4, POLR2A, PRKDC and TRIM28 (PubMed:23149945). Does not interact with C14orf178 (PubMed:24244371). Interacts with UBE2I (PubMed:24105744). Interacts (via N-terminus domain) with EXOSC9 (via C-terminus region); the interaction enhances SETX sumoylation (PubMed:24105744). Interacts with NCL (via N-terminus domain) (PubMed:19515850). Interacts with PABPN1, PABPC1 and SF3B1 (PubMed:19515850). Interacts with SMN1/SMN2 and POLR2A; SMN1/SMN2 recruits SETX to POLR2A (PubMed:19515850, PubMed:26700805). UniProt
The N-terminus domain is necessary for S/G2 nuclear foci localization (PubMed:23149945). UniProt
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Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
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  • Red: potentially disorderd region
  • Blue: probably ordered region.
Hydropathy has been calculated using a sliding window of 15 residues and summing up scores from standard hydrophobicity tables.
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  • Blue: hydrophilic.
Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
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