Schematic view of the six independent multiple alignments generated by grouping the 61 transcripts according to GST class membership. The coding exons, the 5′ and 3′ UTRs (mRNA segments) are reported. Closely related segments (defined using a cut off of 15% divergence) are reported with the same colour within each class. In red we marked the IDs of those sequences that were analysed by SemiQ RT-PCR. Primers (zebra bars) and their localization along the corresponding GST transcript are shown. The ‘NATURE’ column describes each GST sequence as full length (FL), 5′ fragment (5 F), 3′ fragment (3 F), fragment (F), no good ORF (NGO), intron retaining (IR), while the last column describes the number of EST per each transcript.