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A specialized eukaryotic organelle that consists of a filiform extrusion of the cell surface. Each cilium is bounded by an extrusion of the cytoplasmic membrane, and contains a regular longitudinal array of microtubules, anchored basally in a centriole. The membrane surrounding the outer segment of a vertebrate photoreceptor. An immotile primary cilium that may be missing the central pair of microtubules, or the central pair of microtubules and outer dynein arms. Some primary cilia also have altered arrangements of outer microtubules (fewer than nine and/or not always present as doublets). Nonmotile primary cilia typically function as sensory organelles that concentrate and organize sensory signaling molecules. The outer segment of a vertebrate photoreceptor that contains discs of photoreceptive membranes.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: photoreceptor outer segment
Acc: GO:0001750
Aspect: Cellular Component
Desc: The outer segment of a vertebrate photoreceptor that contains discs of photoreceptive membranes.
Proteins in PDR annotated with:
   This term: 41 [Search]
   Term or descendants: 41 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0001750 - photoreceptor outer segment (interactive image map)
YRC Informatics Platform - Version 3.0
Created and Maintained by: Michael Riffle