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ONTOLOGY REPORT - ANNOTATIONS


Term:ventral disc
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Accession:GO:0097597 term browser browse the term
Definition:Specialized organelle found in Giardia species (trophozoite stage) and characterized by a spiral array of microtubules and microtubule-associated structures including dorsal microribbons and crossbridges. The edge of the ventral disc narrows into a lateral crest. The ventral disk mediates mechanical attachment of the trophozoite to the host's intestinal wall, and contains the contractile proteins actinin, alpha-actinin, myosin, and tropomyosin working towards contraction of the disk involved in adherence.
Comment:Due to the asymmetric nature of the Giardia trophozoite, this term is defined spatially as the trophozoite is viewed from the dorsal side, with the two nuclei dorsal to the ventral disc, and the ventral disc toward the anterior.
Synonyms:exact_synonym: ventral adhesive disc
 related_synonym: adhesive disc;   ventral disk


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  cellular_component 20137
    cellular anatomical entity 19837
      organelle 13107
        ventral disc 0
          ventral disc crossbridge 0
          ventral disc dorsal microribbon 0
          ventral disc lateral crest 0
          ventral disc microtubule array 0
          ventral disc overlap zone 0
          ventral disc supernumerary microtubule array 0
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