go_id,ontology,go_term,term_definition,evidence GO:0000166,MF,"nucleotide binding","Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.",IEA 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: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:0006397,BP,"mRNA processing","Any process involved in the conversion of a primary mRNA transcript into one or more mature mRNA(s) prior to translation into polypeptide.",IEA GO:0006405,BP,"RNA export from nucleus","The directed movement of RNA from the nucleus to the cytoplasm.",TAS GO:0006406,BP,"mRNA export from nucleus","The directed movement of mRNA from the nucleus to the cytoplasm.",IGI GO:0008380,BP,"RNA splicing","The process of removing sections of the primary RNA transcript to remove sequences not present in the mature form of the RNA and joining the remaining sections to form the mature form of the RNA.",IEA 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