Figure 2.
Simplified analysis of the structural features of the CAI-1 family of QS signal molecules. An equivalent of SAM (3) is incorporated into CAI-1 providing the structurally conserved portion of the final molecules (highlighted in red), along with an equivalent of a fatty acid in the form of a fatty acid thioester that provides the structurally variable portion of the signaling molecules (highlighted in blue). (
= fatty acid; R′ = CoA or ACP)