FUNCTION: RNA-binding subunit of the trimeric nuclear exosome targeting (NEXT) complex, a complex that functions as an RNA exosome cofactor that directs a subset of non-coding short-lived RNAs for exosomal degradation (PubMed:25189701, PubMed:25578728, PubMed:25525152, PubMed:25852104, PubMed:278714...
FUNCTION: RNA-binding subunit of the trimeric nuclear exosome targeting (NEXT) complex, a complex that functions as an RNA exosome cofactor that directs a subset of non-coding short-lived RNAs for exosomal degradation (PubMed:25189701, PubMed:25578728, PubMed:25525152, PubMed:25852104, PubMed:27871484). NEXT is involved in surveillance and turnover of aberrant transcripts and non-coding RNAs (PubMed:25189701, PubMed:27871484, PubMed:25852104). Binds preferentially polyuridine sequences and associates with newly synthesized RNAs, including pre-mRNAs and short-lived exosome substrates such as promoter upstream transcripts (PROMPTs), enhancer RNAs (eRNAs), and 3'-extended products from small nuclear RNAs (snRNAs) (PubMed:25189701, PubMed:25578728, PubMed:25525152, PubMed:25852104). Participates in several biological processes including DNA damage response (DDR) and stress response (PubMed:25525152, PubMed:30824372). During stress response, activation of the p38MAPK-MK2 pathway decreases RBM7-RNA-binding and subsequently the RNA exosome degradation activities, thereby modulating the turnover of non-coding transcriptome (PubMed:25525152). Participates in DNA damage response (DDR), through its interaction with MEPCE and LARP7, the core subunits of 7SK snRNP complex, that release the positive transcription elongation factor b (P-TEFb) complex from the 7SK snRNP. In turn, activation of P-TEFb complex induces the transcription of P-TEFb-dependent DDR genes to promote cell viability (PubMed:30824372). {ECO:0000269|PubMed:25189701, ECO:0000269|PubMed:25525152, ECO:0000269|PubMed:25578728, ECO:0000269|PubMed:25852104, ECO:0000269|PubMed:27871484, ECO:0000269|PubMed:30824372}.
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GO - Biological processes (BP):
meiotic cell cycle [GO:0051321]; regulation of alternative mRNA splicing, via spliceosome [GO:0000381]; snRNA catabolic process [GO:0016076]...
meiotic cell cycle [GO:0051321]; regulation of alternative mRNA splicing, via spliceosome [GO:0000381]; snRNA catabolic process [GO:0016076]
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GO - Molecular function (MF):
14-3-3 protein binding [GO:0071889]; pre-mRNA intronic binding [GO:0097157]; RNA binding [GO:0003723]; single-stranded RNA binding [GO:0003727]; snRNA binding [GO:0017069]...
14-3-3 protein binding [GO:0071889]; pre-mRNA intronic binding [GO:0097157]; RNA binding [GO:0003723]; single-stranded RNA binding [GO:0003727]; snRNA binding [GO:0017069]
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GO - Cellular component (CC):
nucleoplasm [GO:0005654]; nucleus [GO:0005634]...
nucleoplasm [GO:0005654]; nucleus [GO:0005634]
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