generation of catalytic spliceosome for first transesterification step
Formation of a catalytic spliceosome complex ready to perform the first splicing reaction. This occurs by an ATP-dependent conformational change of the pre-catalytic spliceosome.
GO:0022618
protein-RNA complex assembly
is_a
GO:0000393
spliceosomal conformational changes to generate catalytic conformation
part_of
U12-type catalytic spliceosome formation for first transesterification step
narrow
U2-type catalytic spliceosome formation for first transesterification step
narrow
catalytic spliceosome assembly for first transesterification step
related
formation of catalytic spliceosome for first transesterification step
exact
spliceosomal A2-2 complex biosynthesis
narrow
spliceosomal A2-2 complex formation
narrow
spliceosomal C1 complex biosynthesis
narrow
spliceosomal C1 complex formation
narrow
SPBC19C2.01 SPAC9.13c SPBC211.02c