gem:GM21_3904 K00688 glycogen phosphorylase [EC:2.4.1.1] | (GenBank) alpha-glucan phosphorylase gem:GM21_0116 K16147 starch synthase (maltosyl-transferring) [EC:2.4.99.16] | (GenBank) alpha amylase catalytic region gem:GM21_0117 K05343 maltose alpha-D-glucosyltransferase / alpha-amylase [EC:5.4.99.16 3.2.1.1] | (GenBank) trehalose synthase