Fig. 13

The logic backbone of the ABA network. The backbone structure contains the signal ABA, the four stable motifs, the external driver node (C a ²⁺, marked in bold and italic) of the stable motifs, the output node Closure and its key regulators. The edges are representative of logic paths or subgraphs in the Boolean model. The signal ABA and the output node Closure have yellow background while the motifs are in blue background. Multiple necessary regulators incident on the same node are together sufficient and multiple sufficient regulators incident on the same node are together necessary (i.e. their simultaneous inactivity leads to the inactivation of the target node)