U2-type precatalytic spliceosome
A spliceosomal complex that is formed by the recruitment of the preassembled U4/U6.U5 tri-snRNP to the prespliceosome. Although all 5 snRNPs are present, the precatalytic spliceosome is catalytically inactive. The precatalytic spliceosome includes many proteins in addition to those found in the U1, U2 and U4/U6.U5 snRNPs.
GO:0005684
U2-type spliceosomal complex
is_a
GO:0071011
precatalytic spliceosome
is_a
GT-AG precatalytic spliceosome
narrow
major precatalytic spliceosome
exact
mammalian U2-type spliceosomal complex B
narrow
mammalian U2-type spliceosomal complex B1
narrow
yeast U12-type spliceosomal complex A2-1
related
SPBC18H10.07