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A structure found in a female mammalian cell containing an unpaired X chromosome that has become densely heterochromatic, silenced and localized at the nuclear periphery. A chromosome involved in sex determination. A structure composed of a very long molecule of DNA and associated proteins (e.g. histones) that carries hereditary information. The sex chromosome present in both sexes of species in which the male is the heterogametic sex. Two copies of the X chromosome are present in each somatic cell of females and one copy is present in males. An RNA-protein complex localized to the X chromosome of males where it is required for the hyper-transcriptional activation of the X chromosome. An example of this is found in Drosophila melanogaster.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: X chromosome
Acc: GO:0000805
Aspect: Cellular Component
Desc: The sex chromosome present in both sexes of species in which the male is the heterogametic sex. Two copies of the X chromosome are present in each somatic cell of females and one copy is present in males.
Proteins in PDR annotated with:
   This term: 11 [Search]
   Term or descendants: 15 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0000805 - X chromosome (interactive image map)
YRC Informatics Platform - Version 3.0
Created and Maintained by: Michael Riffle