GO:0005634; C:nucleus; ISS:UniProtKB.
GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
GO:0051219; F:phosphoprotein binding; ISS:UniProtKB.
GO:0006397; P:mRNA processing; IEA:UniProtKB-KW.
GO:0048255; P:mRNA stabilization; ISS:UniProtKB.
GO:0000956; P:nuclear-transcribed mRNA catabolic process; ISS:UniProtKB.
GO:0048026; P:positive regulation of mRNA splicing, via spliceosome; ISS:UniProtKB.
GO:0000381; P:regulation of alternative mRNA splicing, via spliceosome; ISS:UniProtKB.
GO:0006355; P:regulation of transcription, DNA-dependent; IEA:UniProtKB-KW.
GO:0008380; P:RNA splicing; IEA:UniProtKB-KW.
GO:0006351; P:transcription, DNA-dependent; IEA:UniProtKB-KW.