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Gene Ontology Browser
Term Detail
GO term:cilium
Synonym: eukaryotic flagellum
Synonym: flagellum
Synonym: microtubule-based flagellum
GO id:GO:0005929
Definition:A specialized eukaryotic organelle that consists of a filiform extrusion of the cell surface and of some cytoplasmic parts. Each cilium is largely bounded by an extrusion of the cytoplasmic (plasma) membrane, and contains a regular longitudinal array of microtubules, anchored to a basal body.
CommentsNote that we deem cilium and microtubule-based flagellum to be equivalent. In most eukaryotic species, intracellular sub-components of the cilium, such as the ciliary base and rootlet, are located near the plasma membrane. In Diplomonads such as Giardia, instead, the same ciliary parts are located further intracellularly.
Number of paths to term: 3

is-adenotes an 'is-a' relationship
part-ofdenotes a 'part-of' relationship
regulatesdenotes a 'regulates' relationship
positively-regulatesdenotes a 'positively-regulates' relationship
negatively-regulatesdenotes a 'negatively-regulates' relationship


Gene_Ontology
        is-acellular_component
                is-acell
                        part-ofcell part
                                is-acell projection
                                        is-aarchaeal-type flagellum
                                        is-abacterial-type flagellum +
                                        is-ableb
                                        is-abrush border +
                                        is-acell hair
                                        part-ofcell projection part +
                                        is-acilium [GO:0005929] (422 genes, 848 annotations)
                                                part-ofciliary part +
                                                is-aleft anterior flagellum +
                                                is-aleft caudal flagellum +
                                                is-aleft posteriolateral flagellum +
                                                is-aleft ventral flagellum +
                                                is-amotile cilium +
                                                is-aprimary cilium +
                                                is-aright anterior flagellum +
                                                is-aright caudal flagellum +
                                                is-aright posteriolateral flagellum +
                                                is-aright ventral flagellum +
                                        is-acytoneme
                                        is-adendritic cell dendrite
                                        is-afilopodium +
                                        is-aglial cell projection +
                                        is-ahaustorium +
                                        is-ainvadopodium +
                                        is-alamellipodium +
                                        is-amacropinocytic cup +
                                        is-amating projection +
                                        is-amicrospike
                                        is-amicrovillus +
                                        is-amuscle cell projection +
                                        is-aneuron projection +
                                        is-aoral apparatus +
                                        is-apilus +
                                        is-aplant cell papilla +
                                        is-apollen tube +
                                        is-apseudopodium +
                                        is-arhabdomere +
                                        is-aroot hair +
                                        is-aruffle +
                                        is-auropod +


Gene_Ontology
        is-acellular_component
                is-acell part
                        is-acell projection
                                is-aarchaeal-type flagellum
                                is-abacterial-type flagellum +
                                is-ableb
                                is-abrush border +
                                is-acell hair
                                part-ofcell projection part +
                                is-acilium [GO:0005929] (422 genes, 848 annotations)
                                        part-ofciliary part +
                                        is-aleft anterior flagellum +
                                        is-aleft caudal flagellum +
                                        is-aleft posteriolateral flagellum +
                                        is-aleft ventral flagellum +
                                        is-amotile cilium +
                                        is-aprimary cilium +
                                        is-aright anterior flagellum +
                                        is-aright caudal flagellum +
                                        is-aright posteriolateral flagellum +
                                        is-aright ventral flagellum +
                                is-acytoneme
                                is-adendritic cell dendrite
                                is-afilopodium +
                                is-aglial cell projection +
                                is-ahaustorium +
                                is-ainvadopodium +
                                is-alamellipodium +
                                is-amacropinocytic cup +
                                is-amating projection +
                                is-amicrospike
                                is-amicrovillus +
                                is-amuscle cell projection +
                                is-aneuron projection +
                                is-aoral apparatus +
                                is-apilus +
                                is-aplant cell papilla +
                                is-apollen tube +
                                is-apseudopodium +
                                is-arhabdomere +
                                is-aroot hair +
                                is-aruffle +
                                is-auropod +


Gene_Ontology
        is-acellular_component
                is-aorganelle
                        is-acilium [GO:0005929] (422 genes, 848 annotations)
                                part-ofciliary part +
                                is-aleft anterior flagellum +
                                is-aleft caudal flagellum +
                                is-aleft posteriolateral flagellum +
                                is-aleft ventral flagellum +
                                is-amotile cilium +
                                is-aprimary cilium +
                                is-aright anterior flagellum +
                                is-aright caudal flagellum +
                                is-aright posteriolateral flagellum +
                                is-aright ventral flagellum +
                        is-aextracellular organelle +
                        is-aintracellular organelle +
                        is-amembrane-bounded organelle +
                        is-anon-membrane-bounded organelle +
                        part-oforganelle part +
                        is-aventral disc +
                        is-avesicle +


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Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Tumor Biology (MTB), Gene Ontology (GO), MouseCyc
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last database update
12/09/2014
MGI 5.20
The Jackson Laboratory