FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term external side of plasma membrane ID (Ontology) GO:0009897 (Gene Ontology)
Definition The leaflet of the plasma membrane that faces away from the cytoplasm and any proteins embedded or anchored in it or attached to its surface.
Also Known As "external leaflet of plasma membrane" ; "outer surface of cytoplasmic membrane"
Comment
Links to External Ontologies
  QuickGO data     AmiGO data
Annotations
Records annotated with this term OR any of its CHILD TERMS
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Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Genes (FBgn)  GO_BIOLOGICAL_PROCESS       1
Genes (FBgn)  GO_CELLULAR_COMPONENT      38
Genes (FBgn)  GO_MOLECULAR_FUNCTION       1
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Gene Groups Genes
 external side of plasma membrane (all annotations which use CV term, excluding "NOT" statements)       1     38
     is_active_in | external side of plasma membrane       --      25
     located_in | external side of plasma membrane       --      15
Spanning Tree (Parents/Children)
Only view relationship:
  cellular anatomical structure
   |__side of membrane
       |__external side of plasma membrane  40 rec.
           |__external side of apical plasma membrane 1 rec.
           |__periplasmic side of plasma membrane
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Is a side of membrane
Part of plasma membrane
cell surface
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Synonyms
  • "external leaflet of plasma membrane" EXACT
    "juxtamembrane" BROAD
    "outer surface of cytoplasmic membrane" EXACT
Secondary IDs
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