Table 3

Linear regression equations calculated plotting the value of GC content in each protein family, i.e., SIRTs, myoglobins and alpha-crystallins (a and b chains) on the y axis and the various organisms in phylogenetic order on X axis
Full sequence Catalytic core N-terminal C-terminal
SIRT1s y = 0.898x + 36.77 y = 0.310x + 37.89 y = 1.915x + 34.01 y = 0.520x + 37.62
SIRT2s y = 0.832x + 38.50 y = 0.888x + 37.60 y = 0.957x + 38.64 y = 1.336x + 30.96
SIRT3s y = 0.529x + 54.32 y = 0.879x + 49.96 y = 1.316x + 49.76 y = 1.278x + 43.10
SIRT4s y = 0.933x + 43.09 y = 1.016x + 42.07 y = 0.402x + 48.88 y = 0.389x - 0.317
SIRT5s y = 0.926x + 44.12 y = 0.947x + 44.11 y = 0.830x + 44.55 y = −0.435x + 6.341
SIRT6s y = 2.221x + 36.85 y = 1.766x + 40.43 y = 1.912x + 44.92 y = 3.389x + 30.43
SIRT7s y = 3.841x + 30.92 y = 2.053x + 42.16 y = 2.939x + 45.57 y = 2.177x + 42.60
Myoglobins y = 0,247x + 47,89
Alpha Crystallins
chain A y = 1.223x + 47.12
chain B y = 0.290x + 52.71

Costantini et al.

Costantini et al. BMC Evolutionary Biology 2013 13:60   doi:10.1186/1471-2148-13-60

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