U5 snRNP post exon ligation complex ATAC C Complex with lariat containing 5'-end cleaved mRNA U6 ATAC snRNP U12 snRNP U11 snRNP ATAC spliceosome mediated 3' splice site cleavage, exon ligation At the beginning of this reaction, 1 molecule of 'ATAC C Complex with lariat containing 5'-end cleaved mRNA' is present. At the end of this reaction, 1 molecule of 'U6 ATAC snRNP', 1 molecule of 'post exon ligation complex', 1 molecule of 'U12 snRNP', 1 molecule of 'U11 snRNP', and 1 molecule of 'U5 snRNP' are present.<br><br> This reaction takes place in the 'nucleus'.<br> Reactome Database ID Release 4375083 Reactome, http://www.reactome.org ReactomeREACT_1494