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Abstract
A new 2D graphical representation of protein sequences is introduced. Twenty concentric evenly spaced circles divided by n radial lines into equal divisions are selected to represent any protein sequence of length n. An efficient numerical method based on the graph is proposed to measure the similarity between two protein sequences. The method is applied to ND5 proteins of nine different species and 24 transferrin sequences from vertebrates. High values of correlation coefficient between the results and the results of ClustalW are obtained (approximately perfect correlations)