FIG. 2.

Sequence alignment of MPBQ/MSBQ methyltransferases from A. thaliana and Synechocystis sp. strain PCC 6803, their orthologs in C. reinhardtii, and γ-tocopherol methyltransferase from C. reinhardtii. Residues that are identical in at least two of the sequences are shaded in black. Underlined residues indicate the positions of the three S-adenosylmethionine binding domains. The asterisk indicates the position of the vte3 mutation in C. reinhardtii VTE3. γ-TMT, γ-tocopherol methyltransferase.