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Term:
Parent Terms Term With Siblings Child Terms
U12-type catalytic step 1 spliceosome 
A spliceosomal complex that is formed by the displacement of the U11 and U4atac snRNPs from the precatalytic spliceosome; the U12, U5 and U6atac snRNPs remain associated with the mRNA. This complex, sometimes called the activated spliceosome, is the catalytically active form of the spliceosome, and includes many proteins in addition to those found in the U12, and U5 and U6atac snRNPs.
U12-type catalytic step 2 spliceosome 
U12-type post-mRNA release spliceosomal complex 
U12-type post-spliceosomal complex 
U12-type precatalytic spliceosome 
U12-type prespliceosome 
U2-type catalytic step 1 spliceosome  

Synonyms
Exact Synonyms: U12-type activated spliceosome ;   minor catalytic step 1 spliceosome
Narrow Synonyms: AT-AC catalytic step 1 spliceosome ;   mammalian U12-type spliceosomal complex B* ;   mammalian U12-type spliceosomal complex B2 ;   yeast U12-type spliceosomal complex A1
Definition Sources: GOC:ab, GOC:krc, GOC:mah, ISBN:0879695897, ISBN:0879697393, PMID:16201866

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