alpha-D-xylose 1-phosphate + UTP + H(+) = UDP-alpha-D-xylose + diphosphate
alpha-d-xylose 1-phosphate + utp + h(+) = udp-alpha-d-xylose + diphosphate
"xylose-1-phosphate uridylyltransferase"
"xylose-1-phosphate uridylyltransferase"