euchromatin


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euchromatin

 [u-kro´mah-tin]
that state of chromatin in which it stains lightly, is genetically active, and is considered to be partially or fully uncoiled.

eu·chro·ma·tin

(yū-krō'mă-tin),
The parts of chromosomes that during interphase are uncoiled dispersed threads, and not stained by ordinary dyes; metabolically active, in contrast to the inert heterochromatin.

euchromatin

(yo͞o-krō′mə-tĭn′)
n.
Chromosomal material that is genetically active and stains lightly with basic dyes.

eu′chro·mat′ic (yo͞o′krō-măt′ĭk) adj.

eu·chro·ma·tin

(yū-krō'mă-tin)
The parts of chromosomes that, during interphase, are uncoiled dispersed threads and not stained by ordinary dyes; metabolically active, in contrast to the inert heterochromatin.

euchromatin

a chromosome material that stains heavily in METAPHASE but hardly at all in INTERPHASE when it is relatively uncoiled and undergoes TRANSCRIPTION. Compare HETERO CHROMATIN.
References in periodicals archive ?
Banningetal., "Disruption of the gene euchromatin histone methyl transferase1 (Eu-HMTase1) is associated with the 9q34 subtelomeric deletion syndrome," Journal of Medical Genetics, vol.
As shown by morphology observation, the cells exposed 12 h to 150 [micro]M [H.sub.2][O.sub.2] exhibited a typical oxidative injury including multiple membranous vacuoles in the cytoplasm, disruption of endoplasmic reticulum and mitochondrion, and condensing euchromatin in cell nucleus.
The previously well-marked areas of euchromatin and heterochromatin within the structure of cellular nuclei became diffused.
They also indicated centromeric fusions and additions/deletions of C-heterochromatin, as well as occasional pericentric inversions, euchromatin deletions, missing chromosomes and centromeric shifts, as major mechanisms of chromosomal change.
The intensity of Hoechst staining of DNA in compact chromatin regions, such as heterochromatin, is much more intense then Hoechst intercalated into looser regions of chromatin, such as euchromatin; therefore, the difference in Hoechst intensity can be used to determine the degree of compaction observed across nuclei (Belloc et al.
Histone variant H2A.Z marks the 59 ends of both active and inactive genes in euchromatin. Cell 2005; 123:233-48.
The ultrastructural study of untreated diabetic group revealed a reduction in the density of mitochondria in addition to predominance of euchromatin over heterochromatin in the nucleus of parietal cells as compared with the control group.
DNA exists inside of a cell's nucleus in two forms: euchromatin and heterochromatin.
Histone proteins are involved in the dynamic organization of DNA into zones of active euchromatin and inactive heterochromatin in a process that is regulated, in part, by a complex series of posttranslational modifications to histone tails, including acetylation and methylation.
Chromosomal fusions were common, with breakpoints clustered in regions of high transcriptional activity (transcriptomes located in euchromatin).
These two enzymes are working as opposites because HATs will cause chromatin structure to stretch into euchromatin [25].