Fig. 1.

Predicted amino acid sequences of PdSUS1 and PdSUS2. The alignment was made using GENETIX-MAC Ver. 8.0. Identical amino acids are shaded and gaps are indicated by dashes. An arrowhead shows a conserved serine residue (see text). The characteristic N-terminal extension of sucrose synthase (thin underline) and a glycosyl transferases group 1 domain (broken underline) were identified by NCBI Conserved Domain Search. PdSUS2 has an alanine-rich region at the C-terminal region (bold underline). A primer for 3′ RACE of SuSy genes was designed from nucleotides encoding amino acid residues, indicated by an arrow.