Unique graphical representation of protein sequences based on nucleotide triplet codons

We consider a graphical representation of proteins as an alternative to the usual representation of proteins as a sequence listing the natural amino acids. The approach is based on a graphical representation of triplets of DNA in which the interior of a square or the interior of a tetrahedron is used to accommodate 64 sites for the 64 codons. By associating a zigzag curve and various matrices with a protein, just as was the case with graphical representation of DNA, one can construct selected invariants to serve as protein descriptors. The approach is illustrated on the A-chain of human insulin.