GO Term : GO:0005723 alpha-heterochromatin GO

Namespace:  cellular_component Obsolete:  false
description  A small, compact region of heterochromatin located in the middle of the polytene chromosome chromocenter, which undergoes little or no replication during polytenization.

0 Cross References

0 Data Sets

1 Ontology

Name
GO

0 Ontology Annotations

23 Parents

Identifier Name Description
GO:0005622 intracellular The living contents of a cell; the matter contained within (but not including) the plasma membrane, usually taken to exclude large vacuoles and masses of secretory or ingested material. In eukaryotes it includes the nucleus and cytoplasm.
GO:0000775 chromosome, centromeric region The region of a chromosome that includes the centromeric DNA and associated proteins. In monocentric chromosomes, this region corresponds to a single area of the chromosome, whereas in holocentric chromosomes, it is evenly distributed along the chromosome.
GO:0005694 chromosome A structure composed of a very long molecule of DNA and associated proteins (e.g. histones) that carries hereditary information.
GO:0000785 chromatin The ordered and organized complex of DNA, protein, and sometimes RNA, that forms the chromosome.
GO:0044464 cell part Any constituent part of a cell, the basic structural and functional unit of all organisms.
GO:0044424 intracellular part Any constituent part of the living contents of a cell; the matter contained within (but not including) the plasma membrane, usually taken to exclude large vacuoles and masses of secretory or ingested material. In eukaryotes it includes the nucleus and cytoplasm.
GO:0032991 macromolecular complex A stable assembly of two or more macromolecules, i.e. proteins, nucleic acids, carbohydrates or lipids, in which the constituent parts function together.
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:0043229 intracellular organelle Organized structure of distinctive morphology and function, occurring within the cell. Includes the nucleus, mitochondria, plastids, vacuoles, vesicles, ribosomes and the cytoskeleton. 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:0044446 intracellular organelle part A constituent part of an intracellular organelle, an organized structure of distinctive morphology and function, occurring within the cell. Includes constituent parts of the nucleus, mitochondria, plastids, vacuoles, vesicles, ribosomes and the cytoskeleton but excludes the plasma membrane.
GO:0043228 non-membrane-bounded organelle Organized structure of distinctive morphology and function, not bounded by a lipid bilayer membrane. Includes ribosomes, the cytoskeleton and chromosomes.
GO:0043232 intracellular non-membrane-bounded organelle Organized structure of distinctive morphology and function, not bounded by a lipid bilayer membrane and occurring within the cell. Includes ribosomes, the cytoskeleton and chromosomes.
GO:0044427 chromosomal part Any constituent part of a chromosome, a structure composed of a very long molecule of DNA and associated proteins (e.g. histones) that carries hereditary information.
GO:0098687 chromosomal region Any subdivision of a chromosome along its length.
GO:0000792 heterochromatin A compact and highly condensed form of chromatin.
GO:0005700 polytene chromosome A type of chromosome in a polyploid cell, formed when multiple copies of homologous chromosomes are aligned side by side to give a giant chromosome in which distinct chromosome bands are readily visible.
GO:0005701 polytene chromosome chromocenter A region at which the centric regions of polytene chromosomes are joined together.
GO:0010369 chromocenter A region in which centric, heterochromatic portions of one or more chromosomes form a compact structure.
GO:0005721 pericentric heterochromatin Heterochromatin that is located adjacent to the CENP-A rich centromere 'central core' and characterized by the modified histone H3K9me3.
GO:0005723 alpha-heterochromatin A small, compact region of heterochromatin located in the middle of the polytene chromosome chromocenter, which undergoes little or no replication during polytenization.

28 Relations

Relationship
Parent Term . Identifier

Child Term . Identifier
part of GO:0005701 GO:0005723
is_a GO:0005721 GO:0005723
part of GO:0005622 GO:0005723
part of GO:0005700 GO:0005723
part of GO:0005623 GO:0005723
part of GO:0044424 GO:0005723
part of GO:0044446 GO:0005723
part of GO:0043232 GO:0005723
part of GO:0044427 GO:0005723
is_a GO:0032991 GO:0005723
is_a GO:0000792 GO:0005723
part of GO:0044464 GO:0005723
part of GO:0005694 GO:0005723
part of GO:0044422 GO:0005723
part of GO:0005575 GO:0005723
is_a GO:0044446 GO:0005723
is_a GO:0044424 GO:0005723
part of GO:0010369 GO:0005723
is_a GO:0044464 GO:0005723
is_a GO:0044422 GO:0005723
part of GO:0098687 GO:0005723
is_a GO:0000785 GO:0005723
is_a GO:0044427 GO:0005723
is_a GO:0005575 GO:0005723
part of GO:0000775 GO:0005723
part of GO:0043229 GO:0005723
part of GO:0043228 GO:0005723
part of GO:0043226 GO:0005723

0 Synonyms