Figure 4From: An evolutionary ratchet leading to loss of elongation factors in eukaryotesEvolutionary dynamics of elongation factors. The model shows the possible and impossible combinations of elongation factors EFL (turquoise) eEF1A (purple), eEF1Bα (red) following gene acquisition and loss. Impossible scenarios (those that would be fatal for the organism) are indicated with a skull and crossbones. Other notation is explained in the inset box.Back to article page