2.4.1.242 ADP-glucose + (1,4-alpha-D-glucosyl)n - Arabidopsis thaliana ADP + (1,4-alpha-D-glucosyl)n+1 - ? 387819 2.4.1.242 ADP-glucose + (1,4-alpha-D-glucosyl)n - Pyrococcus furiosus ADP + (1,4-alpha-D-glucosyl)n+1 - ? 387819 2.4.1.242 ADP-glucose + (1,4-alpha-D-glucosyl)n - Oryza sativa ADP + (1,4-alpha-D-glucosyl)n+1 - ? 387819 2.4.1.242 ADP-glucose + (1,4-alpha-D-glucosyl)n the enzyme shows similar affinities for ADP and UDP-glucose, while the Vmax measured with UDP-glucose is twofold higher Guillardia theta ADP + (1,4-alpha-D-glucosyl)n+1 - ? 387819 2.4.1.242 ADP-glucose + (1,4-alpha-D-glucosyl)n - Oryza sativa Zh11 ADP + (1,4-alpha-D-glucosyl)n+1 - ? 387819 2.4.1.242 ADP-glucose + (1,4-alpha-glucosyl)n - Triticum aestivum ADP + (1,4-alpha-glucosyl)n+1 - ? 375035 2.4.1.242 ADP-glucose + (1,4-alpha-glucosyl)n - Pisum sativum ADP + (1,4-alpha-glucosyl)n+1 - ? 375035 2.4.1.242 ADP-glucose + (1,4-alpha-glucosyl)n - Arabidopsis thaliana ADP + (1,4-alpha-glucosyl)n+1 - ? 375035 2.4.1.242 ADP-glucose + (1,4-alpha-glucosyl)n - Triticum monococcum ADP + (1,4-alpha-glucosyl)n+1 - ? 375035 2.4.1.242 ADP-glucose + (1,4-alpha-glucosyl)n - Ipomoea batatas ADP + (1,4-alpha-glucosyl)n+1 - ? 375035 2.4.1.242 ADP-glucose + (1,4-alpha-glucosyl)n - Solanum tuberosum ADP + (1,4-alpha-glucosyl)n+1 - ? 375035 2.4.1.242 ADP-glucose + (1,4-alpha-glucosyl)n ADP-glucose is almost 9fold less effective than UDP-glucose, utilized by the ADP-glucose utilizing enzyme Agarophyton tenuistipitatum ADP + (1,4-alpha-glucosyl)n+1 - ? 375035 2.4.1.242 ADP-glucose + (1,4-alpha-glucosyl)n i.e. starch, composition of starch granule, including amylopectin, amylose, A-type and B-type crystals Chlamydomonas reinhardtii ADP + (1,4-alpha-glucosyl)n+1 - ? 375035 2.4.1.242 ADP-glucose + (1,4-alpha-glucosyl)n the Waxy protein and the granule-bound starch synthase are identical Pisum sativum ADP + (1,4-alpha-glucosyl)n+1 - ? 375035 2.4.1.242 ADP-glucose + (1,4-alpha-glucosyl)n the waxy protein and the granule-bound starch synthase are not identical Pisum sativum ADP + (1,4-alpha-glucosyl)n+1 - ? 375035 2.4.1.242 ADP-glucose + (1,4-alpha-glucosyl)n ADP-glucose is almost 9fold less effective than UDP-glucose, utilized by the ADP-glucose utilizing enzyme and UDP-glucose utilizing enzyme, the latter shows 3.8% activity compared to UDP-glucose Agarophyton tenuistipitatum ADP + (1,4-alpha-glucosyl)n+1 - ? 375035 2.4.1.242 ADP-glucose + (1,4-alpha-glucosyl)n i.e. starch Triticum monococcum ADP + (1,4-alpha-glucosyl)n+1 - ? 375035 2.4.1.242 ADP-glucose + (1,4-alpha-glucosyl)n i.e. starch Chlamydomonas reinhardtii ADP + (1,4-alpha-glucosyl)n+1 - ? 375035 2.4.1.242 ADP-glucose + (1,4-alpha-glucosyl)n substrate for the granule-bound enzyme are starch granules Triticum aestivum ADP + (1,4-alpha-glucosyl)n+1 - ? 375035 2.4.1.242 ADP-glucose + amylopectin - Oryza sativa ADP + ? - ? 376222 2.4.1.242 ADP-glucose + amylopectin - Agarophyton tenuistipitatum ADP + ? - ? 376222 2.4.1.242 CDP-glucose + (1,4-alpha-glucosyl)n UDP-glucose utilizing enzyme, 2.5% of the activity with UDP-glucose Agarophyton tenuistipitatum CDP + ? - ? 376458 2.4.1.242 dTDP-glucose + (1,4-alpha-D-glucosyl)n - Pyrococcus furiosus dTDP + (1,4-alpha-D-glucosyl)n+1 - ? 388628 2.4.1.242 GDP-glucose + (1,4-alpha-D-glucosyl)n - Pyrococcus furiosus GDP + (1,4-alpha-D-glucosyl)n+1 - ? 388730 2.4.1.242 GDP-glucose + (1,4-alpha-glucosyl)n UDP-glucose utilizing enzyme, 28.7% of the activity with UDP-glucose Agarophyton tenuistipitatum GDP + ? - ? 376834 2.4.1.242 additional information decreased amylose synthesis activity and altered starch granule morphology during nitrogen starvation, overview Chlamydomonas reinhardtii ? - ? 89 2.4.1.242 additional information enzyme is involved in the starch synthesis pathway synthesizing the amylose component, putative mechanism of regulation of GBSSI gene in photosynthetic tissue assuring the steady-state level of the isozyme, circadian oscillations of the mRNA level in leaves during day/night cycle, overview Arabidopsis thaliana ? - ? 89 2.4.1.242 additional information isozyme GBSSI synthesizes the amylose component of starch, while isozyme GBSSII does not, due to kinetic differences Pisum sativum ? - ? 89 2.4.1.242 additional information isozyme GBSSII has an important function in amylose synthesis in the pericarp of seeds Triticum aestivum ? - ? 89 2.4.1.242 additional information the enzyme plays an important role in the synthesis of B2 and B3 chains of amylopectin in pea Pisum sativum ? - ? 89 2.4.1.242 additional information isozyme GBSSI in isolated starch granules elongates malto-oligosaccharides progressively, adding more than one glucose molecule for each enzyme-glucan encounter, isozyme GBSSII also elongates malto-oligosaccharides but with lower affinity and not progressively Pisum sativum ? - ? 89 2.4.1.242 additional information most effective primer of the reaction is amylopectin, 16% activity with glycogen compared to amylopectin Pisum sativum ? - ? 89 2.4.1.242 additional information the 56-kDa protein is an isozyme of the waxy protein in diploid wheat and belongs to the GBSSI family Triticum monococcum ? - ? 89 2.4.1.242 additional information the enzyme requires the presence of crystalline amylopectin for granule binding and production of amylose, while unbound enzyme occuring in debranching enzyme mutants are only capable to synthesize amylose-like material Chlamydomonas reinhardtii ? - ? 89 2.4.1.242 additional information the UDP-glucose utilizing enzyme shows broad primer specificity Agarophyton tenuistipitatum ? - ? 89 2.4.1.242 additional information the enzyme gains most of its substrate affinity through electrostatic interactions between the enzyme and the alpha-phosphate. No activity with UDP-galactose, no phosphorylase activity Pyrococcus furiosus ? - ? 89 2.4.1.242 additional information the KTGGL motif is reported to be the ADP-glucose binding site Chenopodium quinoa ? - ? 89 2.4.1.242 NDP-glucose + glycogen - Agarophyton tenuistipitatum ? - ? 452086 2.4.1.242 NDP-glucose + [(1-4)-alpha-D-glucosyl]n - Triticum aestivum NDP + [(1-4)-alpha-D-glucosyl]n+1 - ? 398966 2.4.1.242 NDP-glucose + [(1-4)-alpha-D-glucosyl]n - Oryza sativa NDP + [(1-4)-alpha-D-glucosyl]n+1 - ? 398966 2.4.1.242 NDP-glucose + [(1-4)-alpha-D-glucosyl]n - Ipomoea batatas NDP + [(1-4)-alpha-D-glucosyl]n+1 - ? 398966 2.4.1.242 UDP-galactose + (1,4-alpha-glucosyl)n UDP-glucose utilizing enzyme, 10.1% of the activity with UDP-glucose Agarophyton tenuistipitatum UDP + ? - ? 377959 2.4.1.242 UDP-glucose + (1,4-alpha-D-glucosyl)n - Pyrococcus furiosus UDP + (1,4-alpha-D-glucosyl)n+1 - ? 389996 2.4.1.242 UDP-glucose + (1,4-alpha-D-glucosyl)n the granule-bound starch synthase from Guillardia theta is demonstrated to be responsible for the synthesis of long glucan chains. Guillardia theta utilizes a UDP-glucose-based pathway to synthesize starch Guillardia theta UDP + (1,4-alpha-D-glucosyl)n+1 - ? 389996 2.4.1.242 UDP-glucose + (1,4-alpha-D-glucosyl)n the enzyme shows similar affinities for ADP and UDP-glucose, while the Vmax measured with UDP-glucose is twofold higher Guillardia theta UDP + (1,4-alpha-D-glucosyl)n+1 - ? 389996 2.4.1.242 UDP-glucose + (1,4-alpha-glucosyl)n UDP-glucose is the preferred glucosyl donor, utilized by the UDP-glucose utilizing enzyme Agarophyton tenuistipitatum UDP + (1,4-alpha-glucosyl)n+1 - ? 375352 2.4.1.242 UDP-glucose + (1,4-alpha-glucosyl)n 10% of the activity with ADP-glucose Pisum sativum UDP + (1,4-alpha-glucosyl)n+1 - ? 375352