Latent periodicity of the protein families

Motivation: The sequences of proteins possessing strongly divergent periodicity are especially poorly studied at present. Using the developed original methods we have investigated the presence of the latent periodicity in amino acid sequences of various proteins and its connection with evolutionary formation of genes and protein functions. Results: We have revealed 100 protein families for which from 70 up to 100 % of the proteins included in them possess the same kind of the latent periodicity. The periodicity of the certain length and type is a characteristic of each family. We suppose that latent periodicity of functional domains in proteins has the common character and can be found for all known protein families.