FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term spindle assembly ID (Ontology) GO:0051225 (Gene Ontology)
Definition The aggregation, arrangement and bonding together of a set of components to form the spindle, the array of microtubules and associated molecules that serves to move duplicated chromosomes apart.
Also Known As"bipolar spindle biosynthesis" ; "bipolar spindle formation" ; "spindle biosynthesis" (for all, see Synonyms field below)
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Data ClassFieldDirect annotations
Genes (FBgn)GO_BIOLOGICAL_PROCESS
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 Genes
 spindle assembly (all annotations which use CV term, excluding "NOT" statements)
     involved_in | spindle assembly
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Vocabulary search 
microtubule cytoskeleton organization
 |__spindle organization_____________
cell cycle process                   |
 |__spindle organization_____________|
 |__chromosome segregation___________|
organelle assembly                   |
 |__membraneless organelle assembly__|
                                     spindle assembly  81 rec.
                                      |__anastral spindle assembly
                                      |   |__anastral spindle assembly involved in male meiosis
                                      |__meiotic spindle assembly 20 rec.
                                      |   |__meiotic spindle formation (spindle phase two)
                                      |   |__spindle assembly involved in female meiosis(+) 15 rec.
                                      |   |__spindle assembly involved in male meiosis(+) 4 rec.
                                      |__mitotic spindle assembly 37 rec.
                                      |   |__microtubule anchoring at mitotic spindle pole body
                                      |   |__mitotic spindle formation (spindle phase one)(+)
                                      |   |__mitotic spindle formation (spindle phase two)
                                      |   |__mitotic spindle midzone assembly 6 rec.
                                      |   |__regulation of mitotic spindle assembly(+) 9 rec.
                                      |__regulation of spindle assembly 9 rec.
                                      |   |__negative regulation of spindle assembly(+)
                                      |   |__positive regulation of spindle assembly(+)
                                      |   |__regulation of mitotic spindle assembly(+) 9 rec.
                                      |__spindle midzone assembly 9 rec.
                                          |__meiotic spindle midzone assembly 3 rec.
                                          |__mitotic spindle midzone assembly 6 rec.
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Is a spindle organization
membraneless organelle assembly
Part of chromosome segregation
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Synonyms
  • "bipolar spindle biosynthesis" EXACT
    "bipolar spindle formation" EXACT
    "spindle biosynthesis" EXACT
    "spindle formation" EXACT
Secondary IDs
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