umls-concept:C1166924 | skos:definition | GO: A protein complex that posttranscriptionally catalyzes insertion, deletion or substitution of nucleotides at multiple sites within nascent mRNA transcripts to produce mature mRNAs in eukaryotes. [http://www.ejbiotechnology.info/content/vol1/issue1/full/4/, PMID:11564867, PMID:12139607] | lld:umls |