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Thus, the two substrates of this enzyme are dTDP-4-amino-4,6-dideoxy-D-glucose and 2-oxoglutarate, whereas its two products are dTDP-4-dehydro-6-deoxy-D-glucose and L-glutamate. This enzyme belongs to the family of transferases , specifically the transaminases , which transfer nitrogenous groups.
Dextran chains are of varying lengths (from 3 to 2000 kilodaltons). The polymer main chain consists of α-1,6 glycosidic linkages between glucose monomers, with branches from α-1,3 linkages. This characteristic branching distinguishes a dextran from a dextrin , which is a straight chain glucose polymer tethered by α-1,4 or α-1,6 linkages.
The glucose units are primarily linked with α(1→4) glycosidic bonds, like those seen in the linear derivative of glycogen (after the removal of α1,6- branching). [ 1 ] [ 4 ] [ 5 ] Commercial maltodextrin is typically composed of a mixture of chains that vary from three to 17 glucose units long.
TDP-4-oxo-6-deoxy-alpha-D-glucose-3,4-oxoisomerase (dTDP-3-dehydro-6-deoxy-alpha-D-glucopyranose-forming) (EC 5.3.2.4, TDP-4-keto-6-deoxy-D-glucose-3,4-ketoisomerase ...
Glucosepane is a lysine-arginine protein cross-linking product and advanced glycation end product (AGE) derived from D-glucose. [1] It is an irreversible, covalent cross-link product that has been found to make intermolecular and intramolecular cross-links in the collagen of the extracellular matrix (ECM) and crystallin of the eyes. [2]
TDP-4-oxo-6-deoxy-alpha-D-glucose-3,4-oxoisomerase (dTDP-3-dehydro-6-deoxy-alpha-D-galactopyranose-forming) (EC 5.3.2.3, dTDP-6-deoxy-hex-4-ulose isomerase, TDP-6-deoxy-hex-4-ulose isomerase, FdtA) is an enzyme with systematic name dTDP-4-dehydro-6-deoxy-alpha-D-glucopyranose:dTDP-3-dehydro-6-deoxy-alpha-D-galactopyranose isomerase.
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4-α-D-glucanotransferase (EC 2.4.1.25), or glucosyltransferase, transfers three glucose residues from the four-residue glycogen branch to a nearby branch. This exposes a single glucose residue joined to the glucose chain through an α-1,6 glycosidic linkage [10] Mechanism for cleaving of alpha-1,6 linkage.