dissociation constants for uridine nucleotides dissociating from epimerase-dpnh-nucleotide complexes , measured by ultraviolet absorption and fluorescence techniques , are 12 mum for ump , 14 mum for udp-hexopyranoses , 4 mum for udp-pentopyranoses , 27 mum for p-bromoacetamidophenyl uridyl pyrophosphate , 0.14 mum for udp-4-ketohexopyranose intermediate , and 0.36 mum for udp-4-ketopentopyranose intermediate at 27 degrees c in 0.1 m sodium bicinate buffer at ph 8.5 .
C0041921
uridine
C0041986
uridyl pyrophosphate