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Metagenome, a mixture of different genomes (as a rule, bacterial), representsa pattern, and the analysis of its composition is, currently, one of thechallenging problems of bioinformatics. In the present study, the possibilityof evaluating metagenome composition by DNA-marker methods is investigated.These methods are based on using primers, short nucleic acid fragments. Eachprimer picks out of the tested genome the fragment set specific just for thisgenome, which is called its spectrum (for the given primer) and is used foridentifying the genome. The DNA-marker method, applied to a metagenome, alsogives its spectrum, which, obviously, represents the union of the spectra ofall genomes belonging to the metagenome. Thus each primer provides a projectionof the genomes and of the metagenome onto the corresponding spectra set. Herewe propose to apply the random projection (random primer) approach foranalyzing metagenome composition and present some estimates of the methodeffectiveness for the case of Random Amplified Polymorphic DNA (RAPD)technology.

Analysis of Metagenome Composition by the Method of Random Primers