generation of catalytic spliceosome for second transesterification step

Conformational rearrangement of the spliceosomal complex containing the RNA products from the 1st step of splicing to form the catalytic site for the second step of splicing.

catalytic spliceosome assembly for second transesterification step, formation of catalytic U12-type spliceosome for second transesterification step, formation of catalytic U2-type spliceosome for second transesterification step, formation of catalytic spliceosome for second transesterification step, formation of spliceosomal A2-2 complex, formation of spliceosomal C1 complex, generation of catalytic spliceosome for second transesterification step, lariat formation, 5'-splice site cleavage, spliceosomal A2-3 complex biosynthesis, spliceosomal A2-3 complex formation, spliceosomal C2 complex biosynthesis, spliceosomal C2 complex formation

http://purl.uniprot.org/go/0034403