Figure 2
From: Rule–based regulatory and metabolic model for Quorum sensing in P. aeruginosa
QS network as a Boolean topology. Black edge = threshold is 1; blue edge = state of underlined node must be at least 2; orange edge = state of underlined node must be at least 3; green and thin edge = state of underlined node must be at least 4; numbers denote possible states for a node; dotted arrows are reactions involved in a transport process; red and thick edge = happens after a certain number of time steps (degradation). Gray and dashed arrows denote reactions that occurs by chance with a certain probability. Nodes named C represent a complex between autoinducer and receptor, C:G is the complex bound to an operon.