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2.4.1.11: glycogen(starch) synthase

This is an abbreviated version!
For detailed information about glycogen(starch) synthase, go to the full flat file.

Word Map on EC 2.4.1.11

Reaction

UDP-alpha-D-glucose
+
[(1->4)-alpha-D-glucosyl]n
=
UDP
+
[(1->4)-alpha-D-glucosyl]n+1

Synonyms

Cg-GYS, GBSS, GBSSI, glucosyltransferase, uridine diphosphoglucose-glycogen, glycogen synthase, glycogen synthase 2, glycogen synthase-2, glycogen synthetase (starch), granule bound starch synthase, granule-bound starch synthase, GS-I, GSN, GSY2p, Gys-2, GYS1, GYS2, Gys2p, starch synthase I, starch/glycogen synthase, TVAG_258220, UDP-glucose-glycogen glucosyltransferase, UDP-glycogen synthase, UDPG-glycogen synthetase, UDPG-glycogen transglucosylase, uridine diphosphoglucose-glycogen glucosyltransferase

ECTree

     2 Transferases
         2.4 Glycosyltransferases
             2.4.1 Hexosyltransferases
                2.4.1.11 glycogen(starch) synthase

Activating Compound

Activating Compound on EC 2.4.1.11 - glycogen(starch) synthase

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ACTIVATING COMPOUND
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
2,3-diphosphoglyceric acid
-
low concentrations
2-deoxyglucose 6-phosphate
-
stimulates interconversion of D to I form
aspartate
-
increased uptake leads to activation
Bile acids
-
enhance the activity of the insulin receptor and glycogen synthase in primary hepatocytes
bisperoxyvanadium 1,10-phenanthroline
-
phosphatidylinositol 3-kinase inhibitor wortmannin and rapamycin inhibits activation
D-glucose
dihydroxyacetone
-
increase of activity
fructose
-
increase of activity
fructose 1,6-diphosphate
-
low concentrations
galactose
-
increase of activity
galactose 6-phosphate
glucosamine
-
low concentrations during cultivation
glucosamine 6-phosphate
glucose 6-phosphate
glucose-6-phosphate
-
D-glucose 6-phosphate binding structure, Arg580 forms an interaction with the 6-phosphate of D-glucose 6-phosphate, overview. The eukaryotic enzyme is activated by protein phosphatases and D-glucose 6-phosphate binding. The enzyme's response to D-glucose 6-phosphate is controlled by Arg583 and Arg587, while four additional arginine residues present within the same regulatory helix regulate the response to phosphorylation
glutamate
-
increased uptake leads to activation
glycogen
-
-
Insulin
-
insulin-like growth factor 1
-
stimulation of activity. In patients with type 2 diabetes a significant decrease in glycogen synthase activity is accompanied by the decrease in the effect of peptides, giving the following order of their efficiency: insulin = IGF-1> relaxin. In myometrium of pregnant women with gestational treated and untreated diabetes, glycogen synthase activity decreases, the effect of insulin is weaker, whereas the effects of relaxin and IGF-1increase thus giving the following order of their efficiency: relaxin > IGF-1 > insulin. Insulin therapy of type 1 diabetes incompletely restores sensitivity of the enzymes to the peptide actions
-
mannose
-
increase of activity
phosphate
proline
-
increased uptake leads to activation
propionate
-
significant activation
relaxin
-
stimulation of activity. In patients with type 2 diabetes a significant decrease in glycogen synthase activity is accompanied by the decrease in the effect of peptides, giving the following order of their efficiency: insulin = IGF-1 > relaxin. In myometrium of pregnant women with gestational treated and untreated diabetes, glycogen synthase activity decreases, the effect of insulin is weaker, whereas the effects of relaxin and IGF-1 increase thus giving the following order of their efficiency: relaxin > IGF-1 > insulin. Insulin therapy of type 1 diabetes incompletely restores sensitivity of the enzymes to the peptide actions
-
ribose 5-phosphate
-
stimulates interconversion of D to I form
SO42-
-
stimulatory effect increases as the enzyme becomes more phosphorylated
staurosporine
-
-
xylitol
-
increase of activity