Chemical structure of Sac Pox substrates. Chemical structures of (A) phosphotriesters, (B) esters, (C) Acyl-Homoserine Lactones, (D) γ-lactones and (E) δ-lactones are presented. For phosphotriesters, R corresponds to different nature of substituents; LG corresponds to the leaving group. The terminal substituent could be S atom if the molecule is a thionophosphotriester or an O atom if the molecule is an oxonophosphotriester. For esters, R corresponds to different nature of substituent. For AHLs and γ/δ-lactones, R corresponds to different size of acyl chain.