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Table 4 Comparison of the Mesostigma expressed genes with the genomes and ESTs from various organisms. Average identity (AI) of pair wise comparisons of Mesostigma expressed genes with the indicated organismal data set.

From: EST analysis of the scaly green flagellate Mesostigma viride (Streptophyta): Implications for the evolution of green plants (Viridiplantae)

Data set (No. of contigs) Chlamydomonas Cyanidioschyzon Porphyra Thalassiosira Physcomitrella Arabidopsis Oryza
  Genome EST Genome EST Genome EST Genome Genome
All (969) 0.573 0.563 0.522 0.528 0.528 0.590 0.577 0.565
Constrained (314) 0.648 0.653 (n = 244)1) 0.557 0.585 (n = 188)1) 0.569 0.675 (n = 301)1) 0.679 0.671
Evolutionary distance D2) 0.473 0.463 0.658 0.597 0.631 0.425 0.418 0.432
  1. The total data set contains all Mesostigma expressed genes with significant similarity to proteins from other organisms with known or unknown function (see Table 2). The constrained data set contains only Mesostigma expressed genes with significant similarity to proteins in all completely sequenced eukaryotic autotroph organisms.
  2. 1) Number of ESTs showing similarity to Mesostigma expressed genes from the constrained data set in a tBLASTX analysis. 2) Evolutionary distances were calculated using the constrained data set and the approximation given by Kimura [28]: D = -ln (1 - p - 0.2 p2), where p is the fraction of amino acid that differs between the two species.