AmiGO 2: Term Details for "sperm principal piece" (GO:0097228)

Accession: GO:0097228
Name: sperm principal piece
Ontology: cellular_component
Synonyms: None
Alternate IDs: None
Definition: The segment of the sperm flagellum where the mitochondrial sheath ends, and the outer dense fibers (ODFs) associated with outer axonemal doublets 3 and 8 are replaced by the 2 longitudinal columns of the fibrous sheath (FS) which run the length of the principal piece and are stabilized by circumferential ribs. The principal piece makes up ~2/3 of the length of the sperm flagellum and is defined by the presence of the FS and of only 7 (rather than 9) ODFs which taper and then terminate near the distal end of the principal piece. Source: MP:0009836, GOC:cjm
Comment: None
History: See term history for GO:0097228 at QuickGO
Chem. react.: None
Subset: None
Related: Link to all genes and gene products annotated to sperm principal piece (excluding "regulates").; Link to all direct and indirect annotations to sperm principal piece (excluding "regulates").; Link to all direct and indirect annotations download (limited to first 10,000) for sperm principal piece (excluding "regulates").

Include "regulates"
For more information, please see the ontology relation documentation.

subject	relation	object
sperm principal piece	BFO:0000050	sperm flagellum (GO:0036126)
sperm principal piece	is_a	cellular anatomical entity (GO:0110165)
sperm principal piece	RO:0002162	Eukaryota (NCBITaxon:2759)

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