H271VF GAAGTGGATTCTTgtgGACTGGAGTGATAG H271VR CTATCACTCCAGTCcacAAGAATCCACTTC C318VF GCGTTTCGCAAgtgGATTTGATCATG C318VR CATGATCAAATCcacTTGCGAAACGC L131DF GCCACTTTTGGCTgatCTTCAAGATAAAG L131DR CTTTATCTTGAAGatcAGCCAAAAGTGGC L132DF GGCCACTTTTGGCTTTGgaTCAAGATAAAGTATTC L132DR GAATACTTTATCTTGAtcCAAAGCCAAAAGTGGCC * Mutated codons are underlined, with the lowercase letters indicating a base change from the wild-type sequence.

Table 1: Primers used for generating NtOMT2 mutants*.