Fig. 1.

Alignment of deduced amino acid sequences of three Pinus sylvestris (Ps) sesquiterpene synthases, PsTPS 1, PsTPS 2 and PsTPS 3, with the three other conifer sesquiterpene synthases with the highest similarity, Abíes grandis (Ag) γ-humulene synthase (GenBank accession AAC05728), P. abies (Pa) longifolene synthase (GenBank accession AAS47695), A. grandis (Ag) δ-selinene synthase (GenBank accession AAC05727). Amino acid residues that are identical in all six sequences are enclosed in black boxes. The starting codons used for expression are marked with arrows. The DDxxD, RR(x8)W and RxR motifs (solid lines), as well as the ChloroP predicted transit peptide (dotted line) are shown