Percentages of long coiled-coil proteins per genome. CC, coiled-coil length in amino acids, "CC total" includes all sequences predicted to contain a minimum stretch of 20 amino acids predicted to form a coiled-coil, "Long CC" includes all sequences with at least one coiled-coil domain and minimum domain length of 70, two domains and minimum domain length of 50, and three or more domains and minimum domain length of 30. A, archaea; B, Gram+ bacteria; C, Gram- bacteria; D, yeasts; E, metazoa; F, plants. 1, Thermoplasma acidophilum; 2, Methanococcus jannaschii; 3, Archaeoglobus fulgidus; 4, Sulfolobus solfataricus; 5, Mycoplasma genitalium; 6, Mycobacterium tuberculosis; 7, Bacillus subtilis; 8, Clamydia pneumoniae; 9, Heliobacter pylori; 10, Borrelia burgdorferi; 11, Synechocystis sp. PCC6803; 12, Escherichia coli; 13, Chromobacterium violaceum; 14, Agrobacterium tumefaciens; 15, Schizosaccharomyces pombe; 16, Saccharomyces cerevisiae; 17, Drosophila melanogaster; 18, Caenorhabditis elegans; 19, Mus musculus; 20, Homo sapiens; 21, Arabidopsis thaliana; 22, Oryza sativa.