+1 vote
in Cell Biology by (120k points)
Which residues are present in histone proteins?

(a) Lysine & proline

(b) Glutamic acid & aspartic acid

(c) Arginine & Histidine

(d) Serine & Cysteine

The question was asked during a job interview.

The above asked question is from Chemical Basis of Life topic in chapter Chemical Basis of Life of Cell Biology

1 Answer

+1 vote
by (764k points)
selected by
 
Best answer
Right answer is (c) Arginine & Histidine

The explanation is: DNA is a negatively charged molecule that wounds around histone proteins. They are rich in both arginine and histidine residues (both are positively charged Amino acids) which helps the negatively charged DNA bind to it. This forms a strong ionic bond formation allowing the DNA to be tightly packed into chromosomes.

Related questions

Welcome to TalkJarvis QnA, a question-answer community website for the people by the people. On TalkJarvis QnA you can ask your doubts, curiosity, questions and whatever going in your mind either related to studies or others. Experts and people from different fields will answer.

Categories

...