Are nucleosomes transcriptionally active?
Are nucleosomes transcriptionally active?
Mol Cell.
Which chromatin is transcriptionally active?
Euchromatin
Euchromatin is the transcriptionally active regions of the genes.
What is a transcriptionally active gene?
Transcriptionally active or potentially active genes can be distinguished by several criteria from inactive sequences. Active genes show both an increased general sensitivity to endonucleases like DNase I or micrococcal nuclease and the presence of nuclease hypersensitive sites.
Which has transcriptionally inactive chromatin?
`**” “`Euchromatin is said to be transcriptionally active chromatin, whereas heterochromatin is inactive.
What is difference between euchromatin and heterochromatin?
Heterochromatin is defined as the area of the chromosome which is darkly stained with a DNA specific stain and is in comparatively condensed form. Euchromatin is defined as the area of the chromosome which is rich in gene concentration and actively participates in the transcription process.
How does histone acetylation change chromatin structure?
Histone acetylation alters chromatin structure. Acetylation of histones alters accessibility of chromatin and allows DNA binding proteins to interact with exposed sites to activate gene transcription and downstream cellular functions.
Which of the following is transcriptionally inactive?
Transcriptionally inactive chromatin is called heterochromatin.
Which is the transcriptionally active chromatin Class 12?
Class 12th Biology 2015 Set1 Delhi Board Paper Solution Euchromatin is the transcriptionally active region of chromatin in a nucleus.
Why is euchromatin transcriptionally active than heterochromatin?
Why is euchromatin more transcriptionally active?
The key distinction between the structure of euchromatin and heterochromatin is that the nucleosomes in euchromatin are much more widely spaced, which allows for easier access of different protein complexes to the DNA strand and thus increased gene transcription.
How does acetylation affect chromatin?
Histone acetylation may affect chromatin structure directly by altering DNA‐histone interactions within and between nucleosomes, thus resulting in a more open higher‐order chromatin structure.
