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GO:0001740 Barr body

Term Information

ID GO:0001740
Name Barr body
Ontology Cellular Component
Definition 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.
GONUTS GO:0001740 Wiki Page

Taxon Constraints

The use of this term should conform to the following taxon constraints:
Taxon Rule Ancestor GO ID Ancestor GO Term Name Relationship Taxon ID Taxon Reference(s)
GOTAX:0000057 GO:0005623 cell only_in_taxon 131567 cellular organisms
GOTAX:0000059 GO:0005634 nucleus only_in_taxon 2759 Eukaryota
More information on taxon constraints in GO is available here

Cross-references

Database ID
Wikipedia Barr_body

Ancestor Chart

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Child Terms

This table lists all terms that are direct descendants (child terms) of GO:0001740:
Relationship To GO:0001740 Child Term Child Term Name
Has part GO:0098578 condensed chromatin of inactivated sex chromosome

Protein Annotation

Displaying annotations FIRST to LAST of TOTAL Page size: Additional filters: Bookmarkable link
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Gene Product ID
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GO Identifier
GO Term Name
Aspect
Original GO ID
Original GO Term Name
Evidence
Reference
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Date
Assigned By
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Name
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Type
Taxon Name
Sequence

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Co-occurring Terms

These tables show the number of times the term listed in the table has been co-annotated with GO:0001740. The terms are listed in descending order of number of times the term has been co-annotated.
The table on the left is calculated using both electronic and manual-evidenced annotations, while the table on the right is calculated using only manual-evidenced annotations.
Co-occurrence statistics for GO:0001740 based on the entire annotation set Co-occurrence statistics for GO:0001740 based on non-IEA annotations only

Change Log

All changes

Timestamp Action Category Detail
2011-08-04 Deleted RELATION is a GO:0001739 (sex chromatin)
2010-05-27 Added RELATION is a GO:0000228 (nuclear chromosome)
2009-02-05 Added XREF Wikipedia:Barr_body
2008-05-13 Added DEFINITION 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.
2008-05-12 Deleted DEFINITION 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.
2008-04-01 Updated RELATION is a GO:0000805 (X chromosome)
2008-04-01 Updated RELATION is a GO:0001739 (sex chromatin)
2003-03-26 Added DEFINITION 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.
2003-03-21 Added TERM Barr body

Term

Timestamp Action Category Detail
2003-03-21 Added TERM Barr body

Definition/synonyms

Timestamp Action Category Detail
2008-05-13 Added DEFINITION 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.
2008-05-12 Deleted DEFINITION 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.
2003-03-26 Added DEFINITION 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.

Relationships

Timestamp Action Category Detail
2011-08-04 Deleted RELATION is a GO:0001739 (sex chromatin)
2010-05-27 Added RELATION is a GO:0000228 (nuclear chromosome)
2008-04-01 Updated RELATION is a GO:0000805 (X chromosome)
2008-04-01 Updated RELATION is a GO:0001739 (sex chromatin)

Cross-references

Timestamp Action Category Detail
2009-02-05 Added XREF Wikipedia:Barr_body
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