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. Author manuscript; available in PMC: 2014 Nov 4.
Published in final edited form as: ACS Chem Biol. 2014 Feb 26;9(4):880–883. doi: 10.1021/cb500022u

Figure 1.

Figure 1

Structure of an N-acyl homoserine lactone (AHL) and a proline residue (Pro). Arrows indicate freely rotatable bonds (black) and putative n→π* interactions that would constrain those bonds (red).