Term Name:	mRNA trans splicing, SL addition
Synonyms:	nuclear mRNA trans splicing, SL addition, nuclear mRNA trans splicing, spliced leader addition
Definition:	The joining together of two independently transcribed RNAs, where the one that provides the 5' portion of the final mRNA is from a splice leader RNA (SL-RNA). The SL-RNA, or mini-exon donor sequence, is added to the 5'-end of the acceptor RNA molecule which provides the mRNA body.
Ontology:	GO: Biological Process [GO:0045291]    QuickGO    AmiGO