| dextrin glycosyltransferase | Dextrin transglycosylase or glycosyltransferase;a 4-glycosyltransferase converting maltodextrins into amylose and glucose by transferring parts of 1,4-glucan chains to new 4-positions on glucose or other 1,4-glucans. Synonym: amylomaltase, D enzyme, dextrin glycosyltransferase, dextrin transglycosylase, disproportionating enzyme. (05 Mar 2000) |
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| alpha-glucan branching glycosyltransferase | 1,4-alpha-d-glucan branching enzyme |
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| asparagine-N-glycosyltransferase | <enzyme> Involved in glycoprotein biosynthesis Registry number: EC 2.4.1.- (26 Jun 1999) |
| macrolide glycosyltransferase | <enzyme> From streptomyces lividans; utilises udp-glucose as cofactor; substrates include macrolides with 12-, 14-, 15-, or 16-atom cyclic polyketide lactones; enzyme specific for the 2'-oh group of saccharide moieties attached to c-5 of the 16-atom lactone ring Registry number: EC 2.4.1.- Synonym: macrolide glucosyltransferase (26 Jun 1999) |
| glycoprotein glycosyltransferase | <enzyme> Enzymes which add monosaccharides from nucleoside mono-or diphosphate monosaccharides onto glycoproteins Registry number: EC 2.4.1.- (26 Jun 1999) |
| glycosyltransferase | <enzyme> Enzymes that catalyze the transfer of glycosyl group to an acceptor. Most often another carbohydrate molecule acts as an acceptor, but inorganic phosphate can also act as an acceptor, such as in the case of phosphorylases. Some of the enzymes in this group also catalyze hydrolysis, which can be regarded as transfer of a glycosyl group from the donor to water. Subclasses include the hexosyltransferases, pentosyltransferases, sialyltransferases, and those transferring other glycosyl groups. Registry number: EC 2.4 Synonym: transglycosylase. (08 Mar 2000) |
| oligoglucan-branching glycosyltransferase | A glucosyltransferase that transfers an alpha-glucosyl residue in a 1,4-alpha-glucan to the primary hydroxyl group of glucose in a 1,4-alpha-glucan. See: 1,4-alpha-d-glucan branching enzyme. Synonym: oligoglucan-branching glycosyltransferase. (05 Mar 2000) |
| acid dextrin | The product of acid and heat treatment of dextrin. (05 Mar 2000) |
| alpha-dextrin endo-1,6-alpha-glucosidase | <enzyme> An enzyme with action similar to that of isoamylase; it cleaves 1,6-alpha-glucosidic linkages in pullalan, amylopectin, and glycogen, and in alpha-and beta-amylase limit-dextrins of amylopectin and glycogen. Compare: isoamylase. Synonym: limit dextrinase, pullulanase, R enzyme. (05 Mar 2000) |
| dextrin | <chemistry> A translucent, gummy, amorphous substance, nearly tasteless and odorless, used as a substitute for gum, for sizing, etc, and obtained from starch by the action of heat, acids, or diastase. It is of somewhat variable composition, containing several carbohydrates which change easily to their respective varieties of sugar. It is so named from its rotating the plane of polarization to the right; called also British gum, Alsace gum, gommelin, leiocome, etc. See Achroodextrin, and Erythrodextrin. Origin: Cf. F. Dextrine, G. Dextrin. See Dexter. Source: Websters Dictionary (01 Mar 1998) |
| dextrin 6-alpha-d-glucosidase | <enzyme> Catalyses endohydrolysis of 1,6-alpha-d-glucoside linkages at points of branching in chains of 1,4-linked alpha-d-glucose residues Registry number: EC 3.2.1.33 (26 Jun 1999) |
| dextrin 6-glucosyltransferase | A glucosyltransferase transferring 1,4-alpha-d-glucosyl residues, thus catalyzing the synthesis of dextrans (with 1,6 links between monosaccharide units) from dextrins (with 1,4 links) by glucose transfer. Synonym: dextrin-dextran transglucosidase, dextrin 6-glucosyltransferase. (05 Mar 2000) |
| dextrin dextranase | A glucosyltransferase transferring 1,4-alpha-d-glucosyl residues, thus catalyzing the synthesis of dextrans (with 1,6 links between monosaccharide units) from dextrins (with 1,4 links) by glucose transfer. Synonym: dextrin-dextran transglucosidase, dextrin 6-glucosyltransferase. (05 Mar 2000) |
| dextrin-dextran transglucosidase | A glucosyltransferase transferring 1,4-alpha-d-glucosyl residues, thus catalyzing the synthesis of dextrans (with 1,6 links between monosaccharide units) from dextrins (with 1,4 links) by glucose transfer. Synonym: dextrin-dextran transglucosidase, dextrin 6-glucosyltransferase. (05 Mar 2000) |
| dextrin limit | The polysaccharide fragments remaining at the end (limit) of exhaustive hydrolysis of amylopectin or glycogen by alpha-1,4-glucan maltohydrolase, which cannot hydrolyze the alpha-1,6 bonds at branch points; accumulates in individuals with type III glycogen storage disease. Synonym: dextrin limit. (05 Mar 2000) |
| dextrin transglycosylase | Dextrin transglycosylase or glycosyltransferase;a 4-glycosyltransferase converting maltodextrins into amylose and glucose by transferring parts of 1,4-glucan chains to new 4-positions on glucose or other 1,4-glucans. Synonym: amylomaltase, D enzyme, dextrin glycosyltransferase, dextrin transglycosylase, disproportionating enzyme. (05 Mar 2000) |
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