α-Glucosidase, rice

α-Glucosidase, rice (5 mg/mL oligosaccharides/heteroglucosides, 2 mg/mL polysaccharides; 10 min at 37°C) shows a strong preference for α-1,4-linked glycosides^[1].
α-Glucosidase, rice (0.5% substrate; 5 min preincubation, 10 min incubation) isoforms α-glucosidase I and α-glucosidase II exhibit maximum activity toward maltose at 55 °C and maximum activity toward soluble starch at 50 °C.^[1].
α-Glucosidase, rice (100 mM Tris, 100 mM erythritol; 20 min at 37°C) are inhibited by 100 mM Tris and 100 mM erythritol, with both α-glucosidase I and α-glucosidase II affected. Among them, α-glucosidase II is more sensitive to these two inhibitors than α-glucosidase I^[1].
α-Glucosidase, rice exists as two isoforms, ONG2-I and ONG2-II, which directly bind to and degrade starch granules; ONG2-II shows stronger binding ability and faster glucose release rate. Both isoforms share identical substrate specificity and kinetic characteristics, have an optimal pH of 4.5, and exhibit thermostability up to 40 °C.^[2].
α-Glucosidase, rice is inhibited by rice husk extracts (IC₅₀ = 1.25 μg/mL) and steroidal components isolated from rice husks (IC₅₀ = 1.83 μg/mL)^[3].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.