Page 114 - The Miraculous Machine that Works for an Entire Lifetime: Enzyme

Harun Yahya

Thymine
Cytosine
Guanine

Adenine

bases of the DNA nu-
cleic acid and are known
by the names of adenine,
thymine, guanine and cytosine.) Millions of nucleotides
all joined to one another are constantly read by the enzymes, and this
whole process takes less than a second.
However, the enzymes that will read and copy the four kinds of
nucleotides in DNA—adenine, thymine, guanine and cytosine—are
made up of amino acids. Therefore, how an enzyme communicates
with the DNA helix, and how the nucleotides and amino acids under-
stand one another, is something truly extraordinary, since we are look-
ing at two totally different structures. There is no molecular similarity

here to permit a lock-and-key type of compatibility. In molecular terms,
therefore, it would seem very hard for them to establish a connection.
However, a solution to this has also been created within the body. The
enzymes are easily able to read the codons on the DNA and understand
what these codons express. (A codon is a tri-nucleotide sequence of the
code written from the DNA to the mRNA, or messenger RNA. Codons
are found in the mRNA molecule.)

112