RECONFIRMATION OF THE THREE-DOMAIN CLASSIFICATION OF LIFE BY CLUSTER ANALYSIS OF PROTEIN LENGTH DISTRIBUTIONS

Abstract

The classification of life should be based on the intrinsic mechanism in the evolution of life. We found new methods to classify life into Archaea, Bacteria and Eucarya based on the correlation analysis and spectral analysis of protein length distributions. We show that there is rich evolutionary information stored in the fluctuations of protein length distributions. The intrinsic mechanism of diversification of life is revealed by the properties of protein length distributions.