ID 2.4.1.268 DE glucosylglycerate synthase. CA (R)-glycerate + ADP-alpha-D-glucose = (2R)-2-O-(alpha-D-glucopyranosyl)- CA glycerate + ADP + H(+). CC -!- Persephonella marina possesses two enzymatic systems for the CC synthesis of glucosylglycerate. CC -!- The first one is a single-step pathway in which glucosylglycerate CC synthase catalyzes the synthesis of 2-O-(alpha-D-glucopyranosyl)-D- CC glycerate in one-step from ADP-glucose and D-glycerate. CC -!- The second system is a two-step pathway in which EC 2.4.1.266 CC catalyzes the conversion of NDP-glucose and 3-phospho-D-glycerate CC into 2-O-(alpha-D-glucopyranosyl)-3-phospho-D-glycerate, which is CC then converted to 2-O-(alpha-D-glucopyranosyl)-D-glycerate by CC EC 3.1.3.85. DR A9BEU2, GGS_PETMO ; //