InnateDB Protein
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IDBP-256668.6
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Last Modified
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2014-10-13 [Report errors or provide feedback]
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Gene Symbol
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Exosc1
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Protein Name
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exosome component 1
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Synonyms
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2610035C18Rik; 2610104C07Rik; 2610312F07Rik; AI447561;
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Species
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Mus musculus
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Ensembl Protein
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ENSMUSP00000107751
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InnateDB Gene
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IDBG-166581 (Exosc1)
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Protein Structure
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Function |
Non-catalytic component of the RNA exosome complex which has 3'->5' exoribonuclease activity and participates in a multitude of cellular RNA processing and degradation events. In the nucleus, the RNA exosome complex is involved in proper maturation of stable RNA species such as rRNA, snRNA and snoRNA, in the elimination of RNA processing by-products and non-coding 'pervasive' transcripts, such as antisense RNA species and promoter-upstream transcripts (PROMPTs), and of mRNAs with processing defects, thereby limiting or excluding their export to the cytoplasm. The RNA exosome may be involved in Ig class switch recombination (CSR) and/or Ig variable region somatic hypermutation (SHM) by targeting AICDA deamination activity to transcribed dsDNA substrates. In the cytoplasm, the RNA exosome complex is involved in general mRNA turnover and specifically degrades inherently unstable mRNAs containing AU-rich elements (AREs) within their 3' untranslated regions, and in RNA surveillance pathways, preventing translation of aberrant mRNAs. It seems to be involved in degradation of histone mRNA. The catalytic inactive RNA exosome core complex of 9 subunits (Exo-9) is proposed to play a pivotal role in the binding and presentation of RNA for ribonucleolysis, and to serve as a scaffold for the association with catalytic subunits and accessory proteins or complexes. EXOSC1 as peripheral part of the Exo-9 complex stabilizes the hexameric ring of RNase PH-domain subunits through contacts with EXOSC6 and EXOSC8 (By similarity). {ECO:0000250}.
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Subcellular Localization |
Nucleus, nucleolus. Nucleus {ECO:0000250}. Cytoplasm {ECO:0000250}.
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Disease Associations |
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Tissue Specificity |
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Comments |
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Number of Interactions
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This gene and/or its encoded proteins are associated with 2 experimentally validated interaction(s) in this database.
They are also associated with 24 interaction(s) predicted by orthology.
Experimentally validated |
Total |
2
[view]
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Protein-Protein |
2
[view]
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Protein-DNA |
0
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Protein-RNA |
0
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DNA-DNA |
0
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RNA-RNA |
0
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DNA-RNA |
0
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Predicted by orthology |
Total |
24 [view]
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Molecular Function |
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Biological Process |
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Cellular Component |
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PDB ID |
MGI:1913833
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InterPro |
IPR019495
Exosome complex component CSL4
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PFAM |
PF10447
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PRINTS |
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PIRSF |
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SMART |
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TIGRFAMs |
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Modification |
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SwissProt |
Q9DAA6
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PhosphoSite |
PhosphoSite-Q9DAA6
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TrEMBL |
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UniProt Splice Variant |
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Entrez Gene |
66583
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UniGene |
Mm.289086
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RefSeq |
NP_001158033
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MGI ID |
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MGI Symbol |
Exosc1
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OMIM |
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CCDS |
CCDS50436
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HPRD |
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IMGT |
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EMBL |
AK002930
AK006018
BC024423
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GenPept |
AAH24423
BAB22465
BAB24368
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