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Molecular phylogenic relationship between Arabidopsis and P. patens PIPs. The evolutionary tree was generated with PROTDIST and NEIGHBOR of the PHYLIP package (http://bioweb.pasteur.fr/). The bar indicates a mean distance of 0.1 changes per amino acid residue. Numbers correspond to the protein identification from putative PpPIP (http://genome.jgi-psf.org). AtPIP, Arabidopsis PIP; PpPIP, P. patens PIP.
