FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term M band ID (Ontology) GO:0031430 (Gene Ontology)
Definition The midline of aligned thick filaments in a sarcomere; location of specific proteins that link thick filaments. Depending on muscle type the M band consists of different numbers of M lines.[ ISBN:0198506732 ISBN:0815316194 ]
Also Known As "M disc" ; "mesophragma"
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Direct annotations: records annotated with this exact term (child terms are NOT included)
Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Genes (FBgn)GO_CELLULAR_COMPONENT
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Constructs
 M band (all annotations which use CV term, excluding "NOT" statements)
     is_active_in | M band       --
      --
     located_in | M band       --
      --
     M band | adult stage
      --
     M band | adult stage | progressive
      --
Spanning Tree (Parents/Children)
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cellular_component
 |__cellular anatomical structure__
sarcomere                          |
 |__A band_________________________|
cellular anatomical structure      |
 |__A band_________________________|
                                   M band  75 rec.
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Is a cellular anatomical structure
Part of A band
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Synonyms
  • "M disc" EXACT
    "M line" NARROW
    "mesophragma" EXACT
    "midline" BROAD
Secondary IDs
hide External Crossreferences & Linkouts
Wikipedia:Sarcomere#bands