Characterization of 3-D sequences of proteins

We consider the characterization of 3-D sequences of proteins. Using as the input the geometry of the sequences from matrices (dij)k, in which dij is the Euclidean distances between points along the path of the protein (K = 1, 2, 3,…) we derive the average values of suitably normalized matrix elements, referred to as protein profile. So derived invariants were used for characterization. The degree of similarity between differently folded models of proteins is examined using the derived protein profiles.