2.1.1.175 D168L mutation abolishes activity (with quercetin as substrate) 700855 2.1.1.175 D194L mutation abolishes activity (with quercetin as substrate) 700855 2.1.1.175 D209L mutation abolishes activity (with quercetin as substrate) 700855 2.1.1.175 D234L mutation abolishes activity (with quercetin as substrate) 700855 2.1.1.175 E112L mutation results in 40% loss of activity (with quercetin as substrate) 700855 2.1.1.175 E69L mutation results in 14% loss of activity (with quercetin as substrate) 700855 2.1.1.175 N195I mutation abolishes activity (with quercetin as substrate) 700855 2.1.1.175 N235I mutation abolishes activity (with quercetin as substrate) 700855