Page 92 - The Miracle of Protein

90 THE MIRACLE OF PROTEIN

5. After the start codon is recognized,
amino acids codons, in other words ‘instructions for the
production’ are read in quick succession. In
{
other words, they are translated.
peptide 6. First, the start codon attaches to the small-
bond er unit in the ribosomal RNA, which is the
translation unit. Then ribosomal RNA moves
along the mRNA, which carries the produc-
tion instructions.
7. At the same time, tRNA takes its position
in the ribosome with its anticodon and amino
acid load. The amino acid, of which process
is now complete, links with the newly coming
amino acid, using a peptide bond.

The first tRNA to arrive
8. The tRNA that came
first, leaves the ribosome
and the second tRNA, to-
gether with its two amino
acids, moves towards the
second section.

peptide bond

{
9. The next tRNA that ar-
rives at the ribosome, at-
taches to the first section
of the large unit, where tR-
NAs bind. The amino acids
of the first and second
tRNAs attach to the amino
acid of the third tRNA.