Bos taurus Protein: EXOSC8
Summary
InnateDB Protein IDBP-681279.2
Last Modified 2014-10-13 [Report errors or provide feedback]
Gene Symbol EXOSC8
Protein Name Exosome complex component RRP43
Synonyms
Species Bos taurus
Ensembl Protein ENSBTAP00000015733
InnateDB Gene IDBG-629856 (EXOSC8)
Protein Structure
UniProt Annotation
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. EXOSC8 binds to ARE-containing RNAs (By similarity). {ECO:0000250}.
Subcellular Localization Cytoplasm {ECO:0000250}. Nucleus, nucleolus {ECO:0000250}. Nucleus {ECO:0000250}.
Disease Associations
Tissue Specificity
Comments
Interactions
Number of Interactions This gene and/or its encoded proteins are associated with 0 experimentally validated interaction(s) in this database.
They are also associated with 24 interaction(s) predicted by orthology.
Predicted by orthology
Total 24 [view]
Gene Ontology

Molecular Function
Accession GO Term
GO:0003723 RNA binding
GO:0005515 protein binding
GO:0017091 AU-rich element binding
Biological Process
GO:0006364 rRNA processing
Cellular Component
GO:0000178 exosome (RNase complex)
GO:0005634 nucleus
GO:0005730 nucleolus
GO:0005737 cytoplasm
Protein Structure and Domains
PDB ID
InterPro IPR001247 Exoribonuclease, phosphorolytic domain 1
IPR015847 Exoribonuclease, phosphorolytic domain 2
IPR020568 Ribosomal protein S5 domain 2-type fold
PFAM PF01138
PF03725
PRINTS
PIRSF
SMART
TIGRFAMs
Post-translational Modifications
Modification
Cross-References
SwissProt Q2KHU3
PhosphoSite PhosphoSite-
TrEMBL
UniProt Splice Variant
Entrez Gene 532080
UniGene
RefSeq NP_001073074
HUGO
OMIM
CCDS
HPRD
IMGT
EMBL BC112881
GenPept AAI12882