InnateDB Protein
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IDBP-89558.6
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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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EXOSC2
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Protein Name
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exosome component 2
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Synonyms
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hRrp4p; p7; RRP4; Rrp4p;
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Species
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Homo sapiens
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Ensembl Protein
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ENSP00000361433
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InnateDB Gene
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IDBG-89556 (EXOSC2)
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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. EXOSC2 as peripheral part of the Exo-9 complex stabilizes the hexameric ring of RNase PH-domain subunits through contacts with EXOSC4 and EXOSC7. {ECO:0000269PubMed:17545563}.
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Subcellular Localization |
Cytoplasm. Nucleus, nucleolus. Nucleus.
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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 40 experimentally validated interaction(s) in this database.
Experimentally validated |
Total |
40
[view]
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Protein-Protein |
39
[view]
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Protein-DNA |
1
[view]
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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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Molecular Function |
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Biological Process |
GO:0000288
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nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay
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GO:0006364
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rRNA processing
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GO:0010467
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gene expression
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GO:0016070
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RNA metabolic process
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GO:0016071
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mRNA metabolic process
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GO:0030307
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positive regulation of cell growth
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GO:0043928
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exonucleolytic nuclear-transcribed mRNA catabolic process involved in deadenylation-dependent decay
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GO:0090503
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RNA phosphodiester bond hydrolysis, exonucleolytic
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Cellular Component |
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PDB ID |
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InterPro |
IPR012340
Nucleic acid-binding, OB-fold
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PFAM |
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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 |
Q13868
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PhosphoSite |
PhosphoSite-Q13868
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TrEMBL |
B3KQW2
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UniProt Splice Variant |
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Entrez Gene |
23404
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UniGene |
Hs.654643
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RefSeq |
NP_055100
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HUGO |
HGNC:17097
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OMIM |
602238
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CCDS |
CCDS6935
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HPRD |
03758
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IMGT |
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EMBL |
AK001916
AK022460
AK090512
AK296605
AL359092
BC000747
CH471090
U07561
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GenPept |
AAB60392
AAH00747
BAA91977
BAB14043
BAG52174
BAG59218
CAM45748
EAW87944
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