Location: Outside U.S.
Date: Fall 2009
Why DNA is acidic in nature?
Because the phosphate groups, which make up the sugar phosphate
backbone of the molecule, are derived from phosphoric acid.
Ron Baker, Ph.D.
Acids like sulfuric acid or hydrochloric acid are typically known for
their corrosive properties. However, the chemical definition of an
acid is a little more obscure. An acid is any molecule that donate a
proton (or hydrogen ion) to another molecule. By this definition, many
biochemicals are technically acids (amino acids, which are the
building blocks of proteins as well as DNA), but their function in the
body is not about corrosiveness. In fact, there are many compounds
that can be both an acid and a base, and are not corrosive like
Hope this helps,
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Update: June 2012