Enter or paste an amino acid sequence (single letter codes only) into the upper text box, then click the Reverse Translate button. The reverse translation is placed into the lower text box.
For each amino acid in the sequence, the possible nucleotides at each position in the codon are displayed. For example, there are six codons for leucine (CTT, CTC, CTA, CTG, TTA and TTG), and thus, the base at position 1 can be a C or T, position 2 is always a T, and the base at position 3 can be T, C, A or G. This pattern can be depicted as seen to the right. |
Leucine codons:
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Reverse Translate a Protein