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Symbol: HNRNPD Name: eterogeneous nuclear ribonucleoprotein D (AU-rich element RNA binding protein 1, 37kDa) Alias: P37;AUF1;AUF1A;HNRPD;hnRNPD0 Entrez gene ID: 3184 Ensembl gene ID: ENSG00000138668 Species: Mouse (Taxid: 10090) Functional description: This gene belongs to the subfamily of ubiquitously expressed heterogeneous nuclear ribonucleoproteins (hnRNPs). The hnRNPs are nucleic acid binding proteins and they complex with heterogeneous nuclear RNA (hnRNA). These proteins are associated with pre-mRNAs in the nucleus and appear to influence pre-mRNA processing and other aspects of mRNA metabolism and transport. While all of the hnRNPs are present in the nucleus, some seem to shuttle between the nucleus and the cytoplasm. The hnRNP proteins have distinct nucleic acid binding properties. The protein encoded by this gene has two repeats of quasi-RRM domains that bind to RNAs. It localizes to both the nucleus and the cytoplasm. This protein is implicated in the regulation of mRNA stability. Alternative splicing of this gene results in four transcript variants; Binds with high affinity to RNA molecules that contain AU-rich elements (AREs) found within the 3'-UTR of many proto- oncogenes and cytokine mRNAs. Also binds to double- and single- stranded DNA sequences in a specific manner and functions a transcription factor. Each of the RNA-binding domains specifically can bind solely to a single-stranded non-monotonous 5'-UUAG-3' sequence and also weaker to the single-stranded 5'-TTAGGG-3' telomeric DNA repeat. Binds RNA oligonucleotides with 5'-UUAGGG-3' repeats more tightly than the telomeric single-stranded DNA 5'- TTAGGG-3' repeats. Binding of RRM1 to DNA inhibits the formation of DNA quadruplex structure which may play a role in telomere elongation. May be involved in translationally coupled mRNA turnover. Implicated with other RNA-binding proteins in the cytoplasmic deadenylation/translational and decay interplay of the FOS mRNA mediated by the major coding-region determinant of instability (mCRD) domain. [UniProt] Observation: HNRNPD controls inflammation by turning off the inflammatory response to stop the onset of septic shock. Cessation of inflammatory cytokine respisne is mediated partly through cytokine mRNA degradation facilitated by RNA-binding proteins, including HNRNPD. HNRNPD deletion leads to accelerated aging as evidenced by strinking telomere erosion, markedly increased DNA damage repsosne at telomere ends, pronounced cellular senescence and rapid premature aging that increases with successive generations. HNRNPD which is a family of four related genes also maintains the integrity of chromosomes by activating telomerase, because HNRNPD strongly activates the transcription promoter for Tert [Pont et al., 2012]. Interventions: Assays: Organismal Lifespan Classification: Aging Relevance Analysis/Source:  GenAge GenDRHomologs Inparanoids Note: http://www.cell.com/molecular-cell/retrieve/pii/S1097276512003413 Edit \ Update (Admin) | Delete |
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