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प्रश्न
Explain the role of histones in forming a nucleosome.
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उत्तर
(i) Histones are positively charged basic proteins which are organised to form a unit of eight molecules called histone octamer.
(ii) Histones are rich in the basic amino acids residues lysines and arginines which carry positive charges in their side chains.
(iii) The negatively charged DNA is wrapped around the positively charged histone octamer to form a structure called nucleosome.
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संबंधित प्रश्न
Draw a neat and labelled diagram of the Nucleosome.
Histone proteins are ______.
Which of the following is correct about mature RNA in eukaryotes?
______ are the amino acids of histones.
Name the enzymes involved in replacement of gaps during RNA processing in prokaryotes and eukaryotes.
The non-condensed, light stained and transcriptionally active segments of chromosomes are called ______.
Who among the following has developed technique to synthesize artificial mRNA with known repeated sequences of two or three nucleotides?
Histones are best characterised as:
What is the role of topoisomerase I in prokaryotic DNA packaging?
What is the typical range for linker DNA length between nucleosomes?
