We present MMsat-a database of DNA sequences from GenBank possessing the latent periodicity at high level of statistical significance and having the period length in a range from 2 to 100 bases. The periodicity was found by analytical method of information decomposition. These sequences can be considered as potential micro- and minisatellites and thus can be useful for PCR analysis and evolutional studies. Distribution, properties, and potential functions of periodicity are discussed.
