go_id,ontology,go_term,term_definition,evidence
GO:0000398,BP,"mRNA splicing, via spliceosome","The joining together of exons from one or more primary transcripts of messenger RNA (mRNA) and the excision of intron sequences, via a spliceosomal mechanism, so that mRNA consisting only of the joined exons is produced.",IGI
GO:0003723,MF,"RNA binding","Interacting selectively and non-covalently with an RNA molecule or a portion thereof.",IEA
GO:0003729,MF,"mRNA binding","Interacting selectively and non-covalently with messenger RNA (mRNA), an intermediate molecule between DNA and protein. mRNA includes UTR and coding sequences, but does not contain introns.",IBA
GO:0005515,MF,"protein binding","Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).",IPI
GO:0005634,CC,nucleus,"A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.",IEA
GO:0005654,CC,nucleoplasm,"That part of the nuclear content other than the chromosomes or the nucleolus.",IDA
GO:0006369,BP,"termination of RNA polymerase II transcription","The process in which the synthesis of an RNA molecule by RNA polymerase II using a DNA template is completed.",TAS
GO:0006378,BP,"mRNA polyadenylation","The enzymatic addition of a sequence of 40-200 adenylyl residues at the 3' end of a eukaryotic mRNA primary transcript.",IMP
GO:0006379,BP,"mRNA cleavage","Any process in which a pre-mRNA or mRNA molecule is cleaved at specific sites or in a regulated manner.",IDA
GO:0031124,BP,"mRNA 3'-end processing","Any process involved in forming the mature 3' end of an mRNA molecule.",TAS
GO:0044822,MF,"poly(A) RNA binding","Interacting non-covalently with a poly(A) RNA, a RNA molecule which has a tail of adenine bases.",IDA