linkage-specific alpha-d-galactosidases from trichomonas foetus : characterisation of the blood-group b-destroying enzyme as a 1 , 3-alpha-galactosidase and the blood-group p1-destroying enzyme as a 1 , 4-alpha-galactosidase .
C0002268
alpha-galactosidase
C0016955
galactosidase