Substrate Specificities of α-Galactosidase from Rice
The α-galactosidase from rice cleaved not only α-D-galactosyl residues from the non-reducing end of substrates such as melibiose, raffinose and stachyose, but also liberated the terminal galactosyl residues attached O-6 position of the reducing-end mannosyl residue in mannobiose and mannotriose. In addition, the enzyme tore off the stubbed galactosyl residues attached inner-mannosyl residues in mannopentaose. It also could catalyze efficient degalactosylation of galactomannans, such as guar gum and locust bean gum.
Yanguo Shi and Jinlong Zuo
S. H. Li et al., "Substrate Specificities of α-Galactosidase from Rice", Advanced Materials Research, Vols. 183-185, pp. 447-451, 2011