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Table 4 The best fitted model of the nine tandem duplicates

From: Genome-wide identification and evolution of ATP-binding cassette transporters in the ciliate Tetrahymena thermophila: A case of functional divergence in a multigene family

Gene pair ABCA ABCB ABCC ABCG
  ABCA15 ABCA16 ABCA17 ABCA18 ABCB1 ABCB2 ABCB10 ABCB11 ABCB17 ABCB18 ABCC10 ABCC11 ABCC52 ABCC54 ABCG23 ABCG24 ABCG31 ABCG32
Taxon state 3 1 3 3 1 3 1 1 3 3 3 2 3 2 1 1 0 0
Ancestral state 3 3 1 or 3 1 3 2 3 1 0
Ks 0.62 1.71 0.80 1.41 2.05 1.31 1.64 0.20 1.49
Ka/Ks 0.16 0.22 0.16 0.39 0.20 0.16 0.13 0.29 0.17
Possible heterodimer N N N Y N N N Y N
Induced by toxin N N N N N N N N Y (DDT) N N N N N N N N N
Positive selection sites 31 26 0 0 2 9 2 4 0
Best model neofunctionalization neofunctionalization subfunctionalization dosage balance neofunctionalization neofunctionalization uncertain model dosage balance pseudogenization
  1. Taxon or ancestral expression state: 0 = Silent, 1 = Low expression (some points may silent), 2 = Specific high expression and 3 = Continuous high expression.
  2. Y = yes, N = no.