2.1.1.267 D168L isoform ROMT-15, complete loss of activity 700855 2.1.1.267 D168L mutation abolishes activity (with quercetin as substrate) 700855 2.1.1.267 D194L isoform ROMT-15, complete loss of activity 700855 2.1.1.267 D194L mutation abolishes activity (with quercetin as substrate) 700855 2.1.1.267 D209L isoform ROMT-17, complete loss of activity 700855 2.1.1.267 D209L mutation abolishes activity (with quercetin as substrate) 700855 2.1.1.267 D234L isoform ROMT-17, complete loss of activity 700855 2.1.1.267 D234L mutation abolishes activity (with quercetin as substrate) 700855 2.1.1.267 E112L isoform ROMT-17, 14% loss of activity 700855 2.1.1.267 E112L mutation results in 40% loss of activity (with quercetin as substrate) 700855 2.1.1.267 E69L isoform ROMT-15, 14% loss of activity 700855 2.1.1.267 E69L mutation results in 14% loss of activity (with quercetin as substrate) 700855 2.1.1.267 G13E site-directed mutagenesis, the mutant shows increased activity compared to wild-type 757323 2.1.1.267 L87A site-directed mutagenesis, the mutant shows highly decreased catalytic efficency, the observed in vitro catalytic efficiency of PtAOMT-L87R mutant is equal to that of Paeonia tenuifolia PtAOMT wild-type 757323 2.1.1.267 L87R site-directed mutagenesis, the mutant shows highly decreased catalytic efficency, the observed in vitro catalytic efficiency of PtAOMT-L87R mutant is equal to that of Paeonia tenuifolia PtAOMT wild-type 757323 2.1.1.267 additional information construction of a multifunctional flavonoid O-methyltransferase fusing tomato 3'-O-methyltransferase OMT3 and Oryza sativa naringenin 7-O-methyltransferase NOMT. The OMT3/NOMT fusion enzyme possesses both 3'- and 7-OMT activities to diverse flavonoid substrates, which are comparable to those of individual OMT3 and NOMT. The OMT3/OsNOMT enzyme also shows 3'- and 7-OMT activity for 7- or 3'-O-methylflavonoids, respectively. The biotransformation of the flavonoids quercetin, luteolin, eriodictyol, and taxifolin using OMT3/NOMT-transformed Escherichia coli generates corresponding di-O-methylflavonoids, rhamnazin, velutin, 3',7-di-O-methyleriodictyol, and 3',7-di-Omethyltaxifolin, respectively 757460 2.1.1.267 additional information flower color modification in Rosa hybrida by expressing the S-adenosylmethionine: anthocyanin 3',5'-O-methyltransferase gene from Torenia hybrida, phenotypes of T-DNA insertion transgenic plants, overview 757955 2.1.1.267 additional information generation of a multifunctional FOMT fusing a 3'-OMT (SlOMT3, EC 2.1.1.267) and a 7-OMT (OsNOMT, EC 2.1.1.82). The SlOMT3/OsNOMT fusion enzyme possesses both 3'- and 7-OMT activities to diverse flavonoid substrates, which are comparable to those of individual SlOMT3 and OsNOMT. The SlOMT3/OsNOMT enzyme also shows 3'- and 7-OMT activity for 7- or 3'-O-methylflavonoids, respectively, suggesting that the fusion enzyme can sequentially methylate flavonoids into di-O-methylflavonoids. The biotransformation of the flavonoids quercetin, luteolin, eriodictyol, and taxifolin using SlOMT3/OsNOMT-transformed Escherichia coli generated corresponding di-O-methylflavonoids, rhamnazin, velutin, 3',7-di-O-methyleriodictyol, and 3',7-di-O-methyltaxifolin, respectively. These results indicate that dimethoxyflavonoids may be efficiently produced from non-methylated flavonoid precursors through a one-step biotransformation using the engineered Escherichia coli harboring the SlOMT3/OsNOMT fusion gene 757460 2.1.1.267 additional information silencing of AnthOMT in hypocotyl tissue, several hypocotyls of three lines (57, 85 and 87) show an anthocyanin profile that is different to that of the wild-type, and show a strong reduction in malvidin-type anthocyanins, while other lines (64, 66 and 71) show only wild-type anthocyanin profiles 736999 2.1.1.267 N195I isoform ROMT-15, complete loss of activity 700855 2.1.1.267 N195I mutation abolishes activity (with quercetin as substrate) 700855 2.1.1.267 N235I isoform ROMT-17, complete loss of activity 700855 2.1.1.267 N235I mutation abolishes activity (with quercetin as substrate) 700855 2.1.1.267 R87L site-directed mutagenesis, the mutant shows highly increased catalytic efficency, the observed in vitro catalytic efficiency of PtAOMT-R87L mutant is equal to that of Paeonia suffruticosa PsAOMT wild-type 757323 2.1.1.267 T205R site-directed mutagenesis, the mutant shows increased activity compared to wild-type 757323 2.1.1.267 T85A site-directed mutagenesis, the mutant shows increased activity compared to wild-type 757323