GO Term : GO:0097227 sperm annulus GO

Namespace:  cellular_component Obsolete:  false
description  The ring-like, filamentous structure located at the distal end of the midpiece of the sperm flagellum; the annulus is thought to form a diffusion barrier between the midpiece and the principal piece and serve as a stabilizing structure for tail rigidity.

0 Cross References

0 Data Sets

1 Ontology

Name
GO

0 Ontology Annotations

13 Parents

Identifier Name Description
GO:0031514 motile cilium A cilium which has a variable arrangement of axonemal microtubules, contains molecular motors, and beats with a characteristic whip-like pattern that promotes cell motility or transport of fluids and other cells across a cell surface. Motile cilia are typically found in multiple copies on epithelial cells that line the lumenal ducts of various tissues. Motile cilia may also function as sensory organelles.
GO:0044464 cell part Any constituent part of a cell, the basic structural and functional unit of all organisms.
GO:0005575 cellular_component The part of a cell or its extracellular environment in which a gene product is located. A gene product may be located in one or more parts of a cell and its location may be as specific as a particular macromolecular complex, that is, a stable, persistent association of macromolecules that function together.
GO:0005623 cell The basic structural and functional unit of all organisms. Includes the plasma membrane and any external encapsulating structures such as the cell wall and cell envelope.
GO:0043226 organelle Organized structure of distinctive morphology and function. Includes the nucleus, mitochondria, plastids, vacuoles, vesicles, ribosomes and the cytoskeleton, and prokaryotic structures such as anammoxosomes and pirellulosomes. Excludes the plasma membrane.
GO:0044422 organelle part Any constituent part of an organelle, an organized structure of distinctive morphology and function. Includes constituent parts of the nucleus, mitochondria, plastids, vacuoles, vesicles, ribosomes and the cytoskeleton, but excludes the plasma membrane.
GO:0044463 cell projection part Any constituent part of a cell projection, a prolongation or process extending from a cell, e.g. a flagellum or axon.
GO:0042995 cell projection A prolongation or process extending from a cell, e.g. a flagellum or axon.
GO:0005929 cilium 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.
GO:0044441 ciliary part Any constituent part of a cilium, a specialized eukaryotic organelle that consists of a filiform extrusion of the cell surface. Each cilium is bounded by an extrusion of the cytoplasmic (plasma) membrane, and contains a regular longitudinal array of microtubules, anchored basally in a centriole.
GO:0097223 sperm part Any constituent part of a sperm, a mature male germ cell that develops from a spermatid.
GO:0036126 sperm flagellum A microtubule-based flagellum (or cilium) that is part of a sperm, a mature male germ cell that develops from a spermatid.
GO:0097227 sperm annulus The ring-like, filamentous structure located at the distal end of the midpiece of the sperm flagellum; the annulus is thought to form a diffusion barrier between the midpiece and the principal piece and serve as a stabilizing structure for tail rigidity.

15 Relations

Relationship
Parent Term . Identifier

Child Term . Identifier
part of GO:0036126 GO:0097227
is_a GO:0097223 GO:0097227
is_a GO:0044441 GO:0097227
is_a GO:0044464 GO:0097227
is_a GO:0044463 GO:0097227
is_a GO:0005575 GO:0097227
is_a GO:0044422 GO:0097227
part of GO:0097223 GO:0097227
part of GO:0005929 GO:0097227
part of GO:0005623 GO:0097227
part of GO:0042995 GO:0097227
part of GO:0043226 GO:0097227
part of GO:0005575 GO:0097227
part of GO:0031514 GO:0097227
part of GO:0044464 GO:0097227

0 Synonyms