Comparison of PmPLT1, PmPLT2 (sorbitol transporters), and AgMAT1 (mannitol transporter) protein sequences and of the cDNA structures of PmPLT1 and PmPLT2. A, Amino acid sequences of PmPLT1, PmPLT2, and AgMAT1 were aligned with the program SeqVu (James Gardner, Garvan Institute of Medical Research, Sydney), and residues identical in all three sequences were highlighted. B, The structure of the longest PmPLT1 and PmPLT2 cDNAs are presented including the information from the 5′-RACE reactions. Arrowheads indicate the transcriptional start sites and the start (-111 bp) of the short ORF in the 5′-untranslated region of PmPLT1. The complete cDNA sequences were deposited in the EMBL data library. Accession numbers are AJ532589 (PmPLT1) and AJ532590 (PmPLT2).