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Question
Biology
Which amino acids are present in histones?
Q. Which amino acids are present in histones?
1765
190
Biomolecules
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A
Lysine and histidine
0%
B
Valine and histidine
25%
C
Arginine and lysine
50%
D
Arginine and histidine
25%
Solution:
Histone contains basic proteins, bristling with positively charged arginine
(
A
r
g
)
and lysine
(
L
ys
)
residues. Both
A
r
g
and
L
ys
have a free amino group on their
R
group, which attracts protons
(
H
+
)
giving them a positive charge.