Diagrams of three DNA constructs used to express the PhaC1 synthase and FatB3 thioesterase genes in transgenic plants. Only the portion of the constructs containing the genes and regulatory elements (CaMV 35S and napin promoters, octopine synthase 3′-untranslated region [OCS]) are shown. A, C-PHA; B, N-PHA; C, N-FatB3. PTS, Peroxisomal targeting sequence derived from the last 34 amino acids of the isocitrate lyase from B. napus; N, NotI; E, EcoRI; H, HindIII; X, XbaI; K, KpnI.