U2-type precatalytic spliceosome
name: U2-type precatalytic spliceosome
Description: 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|