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2.7.1.6
ATP + alpha-D-galactose = ADP + alpha-D-galactose 1-phosphate
mechanism of D-galactose and nucleotide binding
662617
2.7.1.6
ATP + alpha-D-galactose = ADP + alpha-D-galactose 1-phosphate
mechanism of the reaction is sequential in both directions. Residue Asp183 acts as a catalytic base that deprotonates the C1 hydroxyl group of galactose. The pH-kcat profile of the synthesis of galactose 1-phosphate has a pKa of 6.9 likely due to Asp183. The pH-kcat/KGal profile of the reverse reaction lacks a key pKa required for a direct proton transfer mechanism. Arg36 may lower the pKa of the C1 hydroxyl to facilitate deprotonation
738227
2.7.1.6
ATP + alpha-D-galactose = ADP + alpha-D-galactose 1-phosphate
the most likely kinetic mechanism is an ordered ternary complex in which ATP is the first substrate to bind
641728
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