catalytic step 2 spliceosome
A spliceosomal complex that contains three snRNPs, including U5, bound to a splicing intermediate in which the first catalytic cleavage of the 5' splice site has occurred. The precise subunit composition differs significantly from that of the catalytic step 1, or activated, spliceosome, and includes many proteins in addition to those found in the associated snRNPs.
GO:0005681
spliceosomal complex
is_a
GO:1902494
catalytic complex
is_a
mammalian spliceosomal complex C
narrow
mammalian spliceosomal complex C1
narrow
yeast spliceosomal complex A2-2
narrow
SPBP23A10.12 SPBC887.05c SPBC3E7.14 SPAC2C4.03c SPBC1289.11 SPBC215.12 SPBC9B6.05c SPAC3A12.11c SPBC16H5.05c SPAC22A12.09c SPBC337.06c SPBC32F12.05c SPAC26A3.08 SPAC57A10.03 SPBC4B4.05 SPBC13E7.01 SPCC364.02c SPBC6B1.07 SPBC19C2.14 SPAC22F8.10c SPBC6B1.10 SPBC713.05 SPCC63.11 SPBC2F12.12c SPBC21C3.05 SPAC21E11.05c SPAC20H4.09 SPBP22H7.07 SPBC211.02c SPBC28F2.04c SPAC4F8.12c SPAC1F5.10 SPCC1620.01c SPBP4H10.16c SPAC23H3.02c SPCC550.02c SPAC27F1.09c SPAC20H4.08 SPAC10F6.02c SPBC646.02 SPBC19C2.01 SPCC285.12 SPAC27D7.07c SPBC31F10.11c SPBC3E7.13c