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Category:GO:0000354 ! cis assembly of pre-catalytic spliceosome
name: cis assembly of pre-catalytic spliceosome
namespace: biological_process
alt_id: GO:0000360
alt_id: GO:0000361
def: "Assembly of a spliceosomal complex containing the intact pre-mRNA and all of the spliceosomal snRNPs. This occurs when the tri-snRNP associates with the pre-mRNA and associated snRNPs in an ATP-dependent manner." [GOC:krc, GOC:mtg_mpo, ISBN:0879695897]
comment: Note that this step represents formation of the A2-1 complex (yeast) or the B1 complex (mammals).
synonym: "cis assembly of U12-type pre-catalytic spliceosome" NARROW []
synonym: "cis assembly of U2-type pre-catalytic spliceosome" NARROW []
synonym: "formation of spliceosomal A2-1 complex" NARROW []
synonym: "formation of spliceosomal B1 complex" NARROW []
synonym: "spliceosomal A2-1 complex biosynthesis" NARROW []
synonym: "spliceosomal A2-1 complex formation" NARROW []
synonym: "spliceosomal B1 complex biosynthesis" NARROW []
synonym: "spliceosomal B1 complex formation" NARROW []
is_a: GO:0022618 ! protein-RNA complex assembly
relationship: part_of: GO:0000245 ! spliceosomal complex assembly
relationship: part_of: GO:0045292 ! mRNA cis splicing, via spliceosome
AmiGO
<GOterm>GO:0000354</GOterm>
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