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प्रश्न
What would happen if histones were to be mutated and made rich in acidic amino acids such as aspartic acid and glutamic acid in place of basic amino acids such as lysine and arginine?
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उत्तर
If histone proteins were rich in acidic amino acids instead of basic amino acids then they may not have any role in DNA packaging in eukaryotes as DNA is also negatively charged molecule. The packaging of DNA around the nucleosome would not happen. Consequently, the chromatin fibre would not be formed.
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संबंधित प्रश्न
Differentiate between Euchromatin and Heterochromatin.
Explain the role of histones in forming a nucleosome.
Attempt any TWO of the following:
With the help of a suitable example illustrate ‘Palindrome’.
Write a note on the packaging of DNA in prokaryotes.
The octamer of histone protein is made of ______.
The chromatin is packed to form a solenoid structure of ______ diameter.
Find out the wrong statement about heterochromatin.
A stretch of euchromatin has 200 nucleosomes. How many bp will there be in the stretch and what would be the length of the typical euchromatin?
Plasmid has been used as vector because ______.
______ are the amino acids of histones.
What is the function of histones in DNA packaging?
Distinguish between heterochromatin and euchromatin. Which of the two is transcriptionally active?
Which of the following amino acid residues will constitute the histone core?
Part of chromatins which is densely packed stain darkly and is transcriptionally inactive is called ______.
Total ATP production during EMP pathway is ______.
Name the enzymes involved in replacement of gaps during RNA processing in prokaryotes and eukaryotes.
In a mature, functional mRNA of eukaryotes______.
Define the Transfection.
Histones are enriched with ______.
