ID 2.4.2.2 DE Pyrimidine-nucleoside phosphorylase. AN Py-NPase. CA A pyrimidine nucleoside + phosphate = a pyrimidine base + alpha-D-ribose CA 1-phosphate. CC -!- Both uridine and thymidine are substrates. PR PROSITE; PDOC00557; DR P39142, PDP_BACSU ; P77836, PDP_GEOSE ; Q2FEZ3, PDP_STAA3 ; DR Q2FWC1, PDP_STAA8 ; Q2YUL7, PDP_STAAB ; Q5HE64, PDP_STAAC ; DR Q99SC3, PDP_STAAM ; Q7A4D0, PDP_STAAN ; Q6GET9, PDP_STAAR ; DR Q6G7H4, PDP_STAAS ; Q8NVF6, PDP_STAAW ; Q5HM85, PDP_STAEQ ; DR Q8CNH8, PDP_STAES ; Q4L818, PDP_STAHJ ; //