抄録
Trehalose phosphorylase was purified from the cell extracts of Catellatospora ferruginea. The enzyme had an apparent molecular weight of 400,000 by gel filtration and 98,000 by SDS-PAGE, suggesting that the enzyme was a tetramer. The enzyme was specific for trehalose in phosphorolysis and specific for β-D-glucose 1-phosphate in synthesis. In addition to D-glucose, D-xylose and D-fucose were also possible sugar acceptors during synthesis. Phosphate ions were a key to the activity and stability of the enzyme, controlling the equilibrium of the reversible reaction and the heat stability of the enzyme. The enzyme was strongly inhibited by p-chloromercuribenzoate and pyridoxal phosphate. The enzyme was inactivated by heat or by storage frozen with ammonium chloride and lithium chloride.
