Results 121 to 130 of about 176,145 (169)
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BJOG: An International Journal of Obstetrics & Gynaecology, 1976
SummaryThe quantity and distribution of glycogen has been studied in 86 placentae from the last trimester of pregnancy and 8 of 8 to 16 weeks gestational age. In the first trimester glycogen concentrations were high, between 4.5 to 6.5 mg/g of blood‐free tissue, but from about 12 weeks to term the concentrations were within a narrow range around 1.5 mg/
S A, Robb, F E, Hytten
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SummaryThe quantity and distribution of glycogen has been studied in 86 placentae from the last trimester of pregnancy and 8 of 8 to 16 weeks gestational age. In the first trimester glycogen concentrations were high, between 4.5 to 6.5 mg/g of blood‐free tissue, but from about 12 weeks to term the concentrations were within a narrow range around 1.5 mg/
S A, Robb, F E, Hytten
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Nature, 1961
GLYCOGENS, branched chain polymers of glucose containing α-1,4-glycoside bonds in the main chains and α-1,6-glycoside bonds at the branch points, have been identified in the tissues of all animals thus far examined1. These polymers are made up of a single kind of sub-unit bonded together by a single type of bond and thus only relatively small ...
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GLYCOGENS, branched chain polymers of glucose containing α-1,4-glycoside bonds in the main chains and α-1,6-glycoside bonds at the branch points, have been identified in the tissues of all animals thus far examined1. These polymers are made up of a single kind of sub-unit bonded together by a single type of bond and thus only relatively small ...
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The interaction of muscle glycogen phosphorylase b with glycogen
Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1982Interaction of muscle glycogen phosphorylase b (EC 2.4.1.1) with glycogen was studied by sedimentation, stopped-flow and temperature-jump methods. The equilibrium enzyme concentration was determined by sedimentation in an analytical ultracentrifuge equipped with absorption optics and a photoelectric scanning system.
S V, Klinov +4 more
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Glycogen Synthase and Glycogen Synthase Kinases
1981Publisher Summary This chapter focuses on properties and other biochemical and physiological processes related to glycogen synthase and glycogen synthase kinases. The reversible covalent modification of proteins appears to be one of the fundamental mechanisms that have evolved to regulate the inherent properties of enzyme molecules.
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Biological Reviews, 1948
Summary1. The usual criteria for identification of glycogen are discussed. It is pointed out that these can be applied equally well to amylopectin and α‐amylodextrin. Numerous so‐called glycogens in plants and micro‐organisms may not be chemically identical with animal glycogens, which may quite well vary among themselves.2.
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Summary1. The usual criteria for identification of glycogen are discussed. It is pointed out that these can be applied equally well to amylopectin and α‐amylodextrin. Numerous so‐called glycogens in plants and micro‐organisms may not be chemically identical with animal glycogens, which may quite well vary among themselves.2.
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Glycogen and glycogen synthase from pig leucocytes
International Journal of Biochemistry, 1979Abstract 1. 1. Pig polymorphonuclears and lymphocytes show a lower glycogen content than human leucocytes. 2. 2. The glycogen synthase activity from pig leucocytes has the same value as that from human leucocytes. 3. 3. Two forms of glycogen synthase interconvertible by phosphorylation-dephosphorylation reactions are present in pig ...
F, Pegueroles, R, Cussó
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Nuclear Glycogen and Glycogen Synthase Kinase 3
Biochemical and Biophysical Research Communications, 1998Glycogen is the principal storage form of glucose in animal cells. It accumulates in electron-dense cytoplasmic granules and is synthesized by glycogen synthase (GS), the rate-limiting enzyme of glycogen deposition. Glycogen synthase kinase-3 (GSK-3) is a protein kinase that phosphorylates GS.
M, Ragano-Caracciolo +3 more
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Interaction between glycogen and glycogen phosphorylase of Tetrahymena
Archives of Biochemistry and Biophysics, 1971Abstract The glycogen phosphorylase of Tetrahymena pyriformis complexes with glycogen as judged by its elution pattern from columns of Sepharose 6B. Complex formation does not occur with starch, amylose, or amylopectin, and neither do these polyglucans serve as primers for the enzyme.
V, Kahn, J J, Blum
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Role of glycogen phosphorylase in liver glycogen metabolism
Molecular Aspects of Medicine, 2015Liver glycogen is synthesized after a meal in response to an increase in blood glucose concentration in the portal vein and endocrine and neuroendocrine signals, and is degraded to glucose between meals to maintain blood glucose homeostasis. Glycogen degradation and synthesis during the diurnal cycle are mediated by changes in the activities of ...
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Diabetes, 1972
The present status of the molecular nature of the enzyme glycogen synthase from rabbit skeletal muscle is reviewed. It is shown that per 90,000 Dalton subunit there are six phosphorylatable sites and six sulfhydryl groups. No pyridoxal phosphate is present.
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The present status of the molecular nature of the enzyme glycogen synthase from rabbit skeletal muscle is reviewed. It is shown that per 90,000 Dalton subunit there are six phosphorylatable sites and six sulfhydryl groups. No pyridoxal phosphate is present.
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