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- W1968374866 endingPage "4559" @default.
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- W1968374866 abstract "Splicing factor 1 (SF1) functions at early stages of pre-mRNA splicing and contributes to splice site recognition by interacting with the essential splicing factor U2AF65 and binding to the intron branch site. We have identified an 80 kDa substrate of cGMP-dependent protein kinase-I (PKG-I) isolated from rat brain, which is identical to SF1. PKG phosphorylates SF1 at Ser20, which inhibits the SF1-U2AF65 interaction leading to a block of pre-spliceosome assembly. Mutation of Ser20 to Ala or Thr also inhibits the interaction with U2AF65, indicating that Ser20 is essential for binding. SF1 is phosphorylated in vitro by PKG, but not by cAMP-dependent protein kinase A (PKA). Phosphorylation of SF1 also occurs in cultured neuronal cells and is increased on Ser20 in response to a cGMP analogue. These results suggest a new role for PKG in mammalian pre-mRNA splicing by regulating in a phosphorylation-dependent manner the association of SF1 with U2AF65 and spliceosome assembly." @default.
- W1968374866 created "2016-06-24" @default.
- W1968374866 creator A5082370422 @default.
- W1968374866 date "1999-08-16" @default.
- W1968374866 modified "2023-10-18" @default.
- W1968374866 title "Phosphorylation of splicing factor SF1 on Ser20 by cGMP-dependent protein kinase regulates spliceosome assembly" @default.
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- W1968374866 doi "https://doi.org/10.1093/emboj/18.16.4549" @default.
- W1968374866 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/1171529" @default.
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