alpha-D-ribose 1,5-bisphosphate + uracil => UMP + phosphate
alpha-d-ribose 1,5-bisphosphate + uracil => ump + phosphate
alpha-D-ribose 1,5-bisphosphate + uracil => UMP + phosphate
alpha-d-ribose 1,5-bisphosphate + uracil => ump + phosphate