To read the mRNA codon
Read the A block across from the first-letter block on left-hand side of the table
Read the C column down from the second-letter block across the top of the table
Read G as the fourth line in that block, from the third-letter block on right-hand side of the table
codon 5'-ACG-3' codes for
amino acid thr (threonine).
Figure after © 2004 by Griffiths et al. ; text © 2009 by Steven M. Carr