UDP-alpha-D-glucuronate + H(+) => UDP-alpha-D-xylose + CO2
udp-alpha-d-glucuronate + h(+) => udp-alpha-d-xylose + co2
UDP-alpha-D-glucuronate + H(+) => UDP-alpha-D-xylose + CO2
udp-alpha-d-glucuronate + h(+) => udp-alpha-d-xylose + co2