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Table 1 Distribution of CDK and cyclin family proteins in representative organisms

From: Phylogenetic analysis of CDK and cyclin proteins in premetazoan lineages

Species Phylum CDK Cyclin
Homo sapiens Vertebrata 20 29
Ciona intestinalis Urochordata 10 14
Strongylocentrotus purpuratus Echinodermata 11 14
Branchiostoma floridae Cephalochordata 12 16
Drosophila melanogaster Arthropoda 11 14
Nematostella vectensis Cnidaria 12 16
Trichoplax adhaerens Placozoa 14 14
Amphimedon queenslandica Porifera 11 13
Monosiga brevicollis choanoflagellata 10 8
Salpingoeca rosetta choanoflagellata 6 8
Capsaspora owczarzaki Filasterea 9 10
Sphaeroforma arctica Ichthyosporea 3 9
Saccharomyces cerevisiae Fungus 6 15
Schizosaccharomyces pombe Fungus 7 11
Coprinopsis cinerea Fungus 7 9
Spizellomyces punctatus Fungus 8 8
Thecamonas trahens Apusoza 7 9
Dictyostelium discoideum Amoeboza 8 9
Total   172 226