(Q21109718)

English

U2-type catalytic step 1 spliceosome

A spliceosomal complex that is formed by the displacement of the U1 and U4 snRNPs from the precatalytic spliceosome; the U2, U5 and U6 snRNPs remain associated with the mRNA. This complex, sometimes called the activated spliceosome, is the catalytica

  • U2-type activated spliceosome
  • major catalytic step 1 spliceosome
  • GO:0071006

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