| Inborn error of carbohydrate metabolism (including glycogen storage diseases) (E73-74, 271) |
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| Disaccharide catabolism | Lactose intolerance - Sucrose intolerance |
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| Monosaccharide catabolism | fructose: Essential fructosuria - Fructose intolerance galactose/galactosemia : Galactokinase deficiency - Galactose-1-phosphate uridylyltransferase galactosemia - Galactose epimerase deficiency |
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| Monosaccharide transport | Glucose-galactose malabsorption - Inborn errors of renal tubular transport (Renal glycosuria) |
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| Glycolysis | GSD type VII, Tarui's, phosphofructokinase - Triosephosphate isomerase deficiency - Pyruvate kinase deficiency |
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| Pyruvate catabolism | PDHA - Fumarase deficiency |
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| Gluconeogenesis | PCD - Fructose bisphosphatase deficiency - GSD type I, von Gierke, glucose 6-phosphatase |
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| Glycogenesis | GSD type 0, glycogen synthase - GSD type IV, Andersen's, branching |
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| Glycogenolysis | GSD type II, Pompe's, glucosidase - GSD type III, Cori's, debranching - GSD type V, McArdle, glycogen phosphorylase/GSD type VI, Hers', glycogen phosphorylase - GSD type I, von Gierke, glucose 6-phosphatas |
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| Pentose phosphate pathway | Glucose-6-phosphate dehydrogenase deficiency - Pentosuria |
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| Other | Hyperoxaluria |
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| see also glycolysis enzymes, pentose phosphate pathway enzymes, fructose and galactose metabolism enzymes |