Alignment of complete deduced amino acid sequences of GSHS and hGSHS from higher plants. Abbreviations and GenBank accession numbers are as follows: soybean GSHS (Gmax-GSHS2, AJ272035), bean GSHS2 (Pvul-GSHS2, AF258320), pea GSHS2 (Psat-GSHS2, AF258319), pea GSHS1 (Psat-GSHS1, AF231137), Arabidopsis plastidic GSHS (Atha-GSHSp, AJ243813), Arabidopsis cytosolic GSHS (Atha-GSHSc, U22359), Indian mustard GSHS (Bjun-GSHS, Y10984), and tomato GSHS (Lesc-GSHS, AF017984). Dots denote gaps to maximize alignment. Residues in white lettering on a black background are identical in at least five sequences.