Download The Codon Chart

The Codon Chart
A step by step instruction guide
Codon Chart
How to read a Codon Chart
• Here is the step by step process of how to
read a codon chart.
Step 1:
Know your mRNA sequence.
Ex: AUGGAGCCUACUGAC
* I like to break my sequence into groups of 3’s so I can easily see
my codons.
Step 2:
• Using your mRNA codons determine which
base is 1st, 2nd and 3rd.
A1U2G3GAGCCUACUGAC
* I like to write the number under the base, just in case.
Step 3:
• Find the row that belongs to the 1st base in
your codon. Ex: AUG, where A is 1st
1
Step 4:
• Find the column for the 2nd base letter.
ex: AUG, where U is 2nd.
2
1
 The corresponding overlap is where you will find
the Amino Acid.
Step 5:
• Find the small row that corresponds to your 3rd base
letter. Ex: AUG, where G is the 3rd base letter.
• In this case AUG codes for the Start or the Methionine Amino
Acid.
2
The corresponding overlap is where you will
find the Amino Acid for codon AUG.
1
3