U2-type prespliceosome
A spliceosomal complex that is formed by association of the 5' splice site with the U1 snRNP, while the branch point sequence is recognized by the U2 snRNP. The prespliceosome includes many proteins in addition to those found in the U1 and U2 snRNPs. Commitment to a given pair of 5' and 3' splice sites occurs at the time of prespliceosome formation.
GO:0005684
U2-type spliceosomal complex
is_a
GO:0071010
prespliceosome
is_a
GT-AG prespliceosome
narrow
major prespliceosome
exact
mammalian U2-type spliceosomal complex A
narrow
yeast U2-type spliceosomal complex B
narrow
SPBC211.02c SPAC13C5.02 SPBC1861.08c SPBC4B4.05 SPBC19C2.14 SPAC26A3.08 SPAC31G5.01 SPAC4D7.13 SPAC27F1.09c SPAC27D7.07c SPAC22A12.09c SPAC2C4.03c SPCC16A11.13 SPCC10H11.01 SPBC4B4.09 SPBC31F10.11c SPBC8D2.09c SPBC11G11.06c SPBP35G2.09 SPBC839.10 SPAC22F8.10c SPBC3E7.13c SPBC21C3.05 SPBC146.07 SPAC19A8.13 SPAPJ698.03c SPBC4B4.07c SPBC23E6.01c SPAP8A3.06 SPCC285.12 SPCC962.06c SPBC36.09