FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
CV Term Report
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General Information
Term Nebenkern ID (Ontology) GO:0016006 (Gene Ontology)
Definition A product of the fusion of the mitochondria during spermatogenesis. After the completion of meiosis the mitochondria of the spermatid collect along side the nucleus and fuse into two masses; these wrap around each other to produce the spherical Nebenkern. During flagellum elongation the Nebenkern unfolds and the two derivatives (major and minor mitochondrial derivatives) elongate down the axoneme.[ PubMed:25265054 ]
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Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN     184
Genes (FBgn)  GO_CELLULAR_COMPONENT       9
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      18
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Relevant FlyBase reports
 Alleles Genes Constructs
 Nebenkern (all annotations which use CV term, excluding "NOT" statements)     185      9     18
     located_in | Nebenkern       --       9       --
     Nebenkern | absent       3       --       2
     Nebenkern | germline clone       5       --       --
     Nebenkern | temperature conditional       2       --       1
     Nebenkern | third instar larval stage       1       --       --
Spanning Tree (Parents/Children)
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  intracellular membrane-bounded organelle
   |__mitochondrial derivative
       |__Nebenkern  212 rec.
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