alignment of 3' and 5' splice sites of mRNA
Recognition of both the 5' and 3'-splice sites and positioning them in the correct alignment with respect to each other so that the second catalytic step of nuclear mRNA splicing can occur.
GO:0000389
mRNA 3'-splice site recognition
is_a
GO:0000395
mRNA 5'-splice site recognition
is_a
GO:0000350
generation of catalytic spliceosome for second transesterification step
part_of
alignment of 3' and 5' splice sites of nuclear mRNA
exact