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Glucose-6-phosphate - Wikipedia, the free encyclopedia Glucose-6-phosphate (G6P) is a phosphorylated glucose molecule on carbon 6. The phosphorylation of glucose to lead to G6P is catalyzed with hexokinase enzymes, this consuming one ATP. G6P can travel down two metabolic pathways, glycolysis and the pentose phosphate pathway. en.wikipedia.org /wiki/Glucose-6-phosphate   (80 words)

Glucose-6-Phosphate Dehydrogenase Deficiency Glucose- 6-Phosphate Dehydrogenase Deficiency is inherited as an X-linked genetic trait. A deficiency of this enzyme may result in the premature destruction of red blood cells (an acute hemolytic anemia or a chronic spherocytic type) when an affected individual is exposed to certain medications or chemicals, experiences certain viral or bacterial infections, and/or inhales the pollen of, or consumes, fava beans (favism). www.webmd.com /hw/health_guide_atoz/nord774.asp   (579 words)

Glucose-6-phosphate dehydrogenase deficiency - Wikipedia, the free encyclopedia Glucose-6-phosphate dehydrogenase (G6PD) is an enzyme in the pentose phosphate pathway (see image), a metabolic pathway that supplies energy to a number of cells (most notably erythrocytes), and maintains the level of the co-enzyme nicotinamide adenine dinucleotide phosphate (NADPH). Deficiency of G6PD in the alternative pathway causes the build up of glucose and thus there is an increase of advanced glycation endproducts (AGE). The hemoglobin is metabolised to bilirubin (causing jaundice at high concentrations) or excreted directly by the kidney (causing acute renal failure in severe cases). en.wikipedia.org /wiki/Glucose-6-phosphate_dehydrogenase_deficiency   (817 words)

Principles of Biochemistry, 3rd Edition CW Chapter 11 -- Practice Exercises III Because of the regulatory interrelationships between metabolites, when glucagon is high, fructose-2,6-bisphosphatase is _______, ____ fructose-2,6-phosphate is produced, and therefore there is ____ flux through glycolysis. Therefore, in order to increase the sweetness of foods, glucose is converted to fructose (high-fructose corn syrup) by heating to induce isomerization. P label at the gamma position might be used to trace phosphate flow during glycolysis. cwx.prenhall.com /horton/chapter11/multiple3/deluxe-content.html   (380 words)

glucose 6 phosphate ester of glucose with phosphoric acid, made in the course of glucose metabolism by mammalian and other cells; a normal constituent of resting muscle and probably in constant equilibrium with fructose-6-phosphate. crisp.cit.nih.gov /Thesaurus/00003357.htm   (31 words)

Escherichia coli adenylate cyclase homepage - Chapter IV In 1973, it was shown by H. Kornberg and coworkers that transport, the primary function of the PTS, is inhibited by glucose 6-phosphate [Medline]. It is therefore improbable that glucose 6-phosphate transport and/or utilization indirectly regulates adenylate cyclase by a mechanism involving dephosphorylation of Enzyme IIA-glc. It was further proposed that glucose 6-phosphate metabolism is essential for controlling the phosphorylation state of Enzyme IIA-glc [Medline]. minst.org /ecoli_cyclase_glucose_6_phosphate.htm   (550 words)

BIOCHEMISTRY I - GLYCOLYSIS Glucose 1-phosphate is converted to glucose 6-phosphate by phosphoglucomutase and enters into the glycolysis pathway at the beginning of the second step. Glucose is cut from a nonreducing end by glycogen phosphorylase and released into the cell as glucose 1-phosphate. Cells (except liver and pancreas) regulate the [glucose] by glucose transporters on the cell membranes. www.sbuniv.edu /~ggray/CHE3364/b1c19out.html   (1450 words)

Glycolysis & Fermentation The Hexokinase reaction involves nucleophilic attack of the C6 hydroxyl oxygen of glucose on the phosphorous of the terminal phosphate of ATP. Phosphate is shifted from the hydroxyl on C3 of 3-phosphoglycerate to the hydroxyl on C2. Thus glucose is released from the liver to the blood as needed to maintain blood [glucose]. www.rpi.edu /dept/bcbp/molbiochem/MBWeb/mb1/part2/glycolysis.htm   (1469 words)

Diabetes: Glycogen Synthase Sensitivity to Insulin and Gl... @ HighBeam Research We conclude that Ser-7 and Ser-640 are both involved in mediating the response of glycogen synthase to insulin and activation by glucose 6-phosphate. Stable clones of Rat-1 fibroblasts were cultured to confluent monolayers in 60-mm dishes in DMEM with 25 mmol/l glucose supplemented with 10% FBS, 100 U/ml penicillin, 100 [micro]g/ml streptomycin, and 0.4 mg/ml G418, followed by 48-h incubation in the same media with 5 mmol/l glucose. After incubation for 1 h, cells were rinsed with 6 ml of ice-cold homogenization buffer (HB) (50 mmol/l Tris-HCl, pH 7.8, 10 mmol/l EDTA, 2 mmol/l EGTA, 100 mmol/lNaF, 0.1 mmol/l [N.sup.[Alpha]]-p-tosyl-L-lysine chloromethyl ketone, 1 mmol/l phenylmethylsulfonyl fluoride, and 1 mmol/l dithiothreitol) and were frozen in liquid nitrogen in 0.5 ml of HB buffer. www.highbeam.com /library/doc0.asp?DOCID=1G1:63713275&refid=ip_encyclopedia_hf   (3700 words)

Maternally transmitted severe glucose 6-phosphate dehydrogenase deficiency is an embryonic lethal Gel 1 was stained with glucose 6-phosphate as substrate; gel 2 was stained with galactose 6-phosphate as substrate. The glucose 6-phosphate dehydrogenase (G6PD) gene is a prototype housekeeping gene (Vulliamy et al., 1992; Kletzien et al., 1994) encoding the first enzyme of the pentose phosphate pathway, an NADP-linked dehydrogenase (Luzzatto and Testa, 1978; Stryer, 1995). Spectrophotometric determinations of dehydrogenase activity with three sugars (glucose, galactose 6-phosphate and mannose 6-phosphate) other than G6P (data not shown) and acrylamide gel electrophoresis (which resolves HD from G6PD; Figure 1A) have indeed shown that some but not all of the 'residual' enzyme activity was due to HD; but some was definitely due to G6PD. www.nature.com /cgi-taf/dynapage.taf?file=/emboj/journal/v21/n16/full/7594642a.html   (7297 words)

Glucose-6-phosphate Isomerase Backpage Protein: Structural glucose phosphate isomerase 1 (EC 5.3.1.9) (Glucose-6- phosphate isomerase) (GPI) (Phosphoglucose isomerase) (PGI) (Phosphohexose isomerase) (PHI) (Fragment). Definition: glucose phosphate isomerase 1; glucose phosphate isomerase 1 complex; glucose phosphate isomerase 1, temporal; glucose phosphate isomerase 1, regulatory; glucose phosphate isomerase 1, structural [Mus musculus]. genmapp.org /HTML_MAPPs/Mouse/Mm_Contributed_20041110/metabolic_process-GenMAPP/Mm_Glycolysis_and_Gluconeogenesis/_Support/Gpi1_Gpi1.htm   (84 words)

Gale Encyclopedia of Medicine: Glucose-6-phosphate dehydrogenase deficiency "Glucose 6-Phosphate Dehydrogenase Deficiency." In The Metabolic and Molecular Bases of Inherited Disease, 7th ed. www.findarticles.com /p/articles/mi_g2601/is_0005/ai_2601000597   (1162 words)

Glucose 6-phosphate It catalyses the following reaction to convert the highly polar glucose 6-phosphate to less polar glucose. Glucose 6-phosphatase has an extremely important role in the distribution of glucose from liver to other tissues including brain and muscle. This permits glucose to cross the cytoplasmic membrane and hence leave the cell. www.unisanet.unisa.edu.au /10921/g6pase.htm   (164 words)

Glucose-6-phosphate dehydrogenase Both enzymes can be used as indicator enzymes in reactions where glucose-6-phosphate is the final product. the biosynthesis of D-ribose-5- phosphate essential in the biological formation of nucleic acids. They are commonly used in the determination of glucose in conjunction with hexokinase www.serva.de /products/knowledge/061334.shtml   (167 words)

Gluconeogenesis Synthesis of glucose from three and four carbon precursors is essentially a reversal of glycolysis. The glucose is then returned to the blood for use by muscle as an energy source and to replenish glycogen stores. Secondly, the lactate produced by the LDH reaction is released to the blood stream and transported to the liver where it is converted to glucose. web.indstate.edu /thcme/mwking/gluconeogenesis.html   (2243 words)

Pentose Phosphate Pathway Glyceraldehyde-3-phosphate and fructose-6-phosphate, formed from the 5-carbon sugar phosphates, may be converted to glucose-6-phosphate for reentry into the linear portion of the Pentose Phosphate Pathway, maximizing formation of The flow of intermediates containing 15 C atoms through Pentose Phosphate Pathway reactions by which 5-C sugars are converted to 3-C and 6-C sugars is summarized in the diagram at right and balance sheet below. The Pentose Phosphate Pathway (also called Phosphogluconate Pathway, or Hexose Monophosphate Shunt) is depicted with structures of intermediates in Fig. www.rpi.edu /dept/bcbp/molbiochem/MBWeb/mb2/part1/pentose.htm   (797 words)

► Glucose-6-phosphate dehydrogenase Red blood cells are almost solely dependent on blood glucose as a source of energy. Red blood cells can also divert glucose into a secondary pathway which results in the production of NADPH from NADP. NADPH plays an important role in maintaining the proper 3-dimensional structure of proteins in the cell membranes and also in maintaining hemoglobin in the reduced state. www.umm.edu /ency/article/003671.htm   (598 words)

PGI1 - Glucose-6-phosphate isomerase Transcriptional induction of the PDC1 gene (encoding pyruvate decarboxylase) was observed after glucose or galactose pulses were applied to the pgi1 strain, demonstrating that metabolism of these sugars beyond glucose 6-phosphate is dispensable for PDC1 induction. In contrast to the wild-type transcriptional inhibition of the glucose-repressible genes, HXK1 and GAL10 (encoding hexokinase isoenzyme 1 and uridine diphosphoglucose-4-epimerase, respectively) did not occur upon addition of glucose or fructose to the pgi1 mutant. The structural gene PGI1 coding for phosphoglucose isomerase was replaced by the LEU2 gene in the genome of Saccharomyces cerevisiae. www.ihop-net.org /UniPub/iHOP/gg/32848.html   (765 words)

MedBiochem Exam 1, 1998 The normal concentration of glucose 6 phosphate (G6P) and fructose 6 phosphate (F6P) in human erythrocytes are 1x 10 Glucose 1-phosphate uridylyltransferase is an out-of-date term that found its way into this exam. G6P is an allosteric activator of glycogen synthase b. www.ttuhsc.edu /som/courses/biochem/exam198.html   (2508 words)

Glucose 6 Phosphate Dehydrogenase antibody (ab993) datasheet Glucose 6 Phosphate Dehydrogenase (G6PD) produces pentose sugars for nucleic acid synthesis and is the main producer of NADPH reducing power. If Glucose 6 Phosphate Dehydrogenase antibody (ab993) does not perform as described on this datasheet, notify us within 90 days of delivery using this form, so that we can help you or offer you a replacement or a refund. Catalytic activity: D glucose 6 phosphate + NADP(+) = D glucono 1,5 lactone 6 phosphate + NADPH. www.abcam.com /?datasheet=993   (425 words)

Malaria Site: Glucose 6 Phosphate Dehydrogenase Deficiency of Glucose 6 phosphate dehydrogenase is the most common among the congenital shunt defects, affecting more than 200 million people in the world. lucose 6 phosphate dehydrogenase is an enzyme in the Hexose Monophosphate shunt. Defects in the shunt leads to inadequate protection against oxidation, resulting in oxidation of sulfhydryl groups and precipitation of hemoglobin as Heinz bodies and in lysis of the red cell membrane. www.malariasite.com /malaria/G6PD.htm   (463 words)

Pregnancy alters glucose-6-phosphate dehydrogenase trafficking, cell metabolism, and oxidant release of maternal neutrophils -- Kindzelskii et al. 110 (12): 1801 -- Journal of Clinical Investigation flux from glucose to CO indicates that the HMS is intact in Glucose generates sub-plasma membrane ATP microdomains in single islet ß-cells. Tan, A.S., Ahmed, N., and Berridge, M.V. Acute regulation of glucose transport after activation of human peripheral blood neutrophils by phorbol myristate acetate, fMLP, and granulocyte-macrophage colony-stimulation factor. www.jci.org /cgi/content/full/110/12/1801   (5963 words)

pentosephosh.html Glucose 6-phosphate dehydrogenase (step 2) catalyzes the committed step of the pentose phosphate pathway and is feedback inhibited by NADPH. Under these conditions even though the oxidative pathway is shut down by NADPH inhibiting glucose 6-phosphate dehydrogenase, the requirements for nucleic acid precursor synthesis can still be met. Such is the case if there is a deficiency of glucose 6-phosphate dehydrogenase. www.library.csi.cuny.edu /~davis/Biochem_3521/lect16/pentosephosh.html   (699 words)

Glucose-6-phosphate -- Facts, Info, and Encyclopedia article Glucose-6-phosphate (G6P) is a phosphorylated (A monosaccharide sugar that has several forms; an important source of physiological energy) glucose molecule on carbon 6. (One form in which body fuel is stored; stored primarily in the liver and broken down into glucose when needed by the body) Glycogen (A monosaccharide sugar that has several forms; an important source of physiological energy) Glucose www.absoluteastronomy.com /encyclopedia/g/gl/glucose-6-phosphate.htm   (111 words)

Properties of the Glucose-6-Phosphate Transporter from Chlamydia pneumoniae (HPTcp) and the Glucose-6-Phosphate Sensor from Escherichia coli (UhpC) -- Schwöppe et al. 184 (8): 2108 -- The Journal of Bacteriology The mechanism of glucose 6-phosphate transport by Escherichia coli. Sequence of a putative glucose 6-phosphate translocase, mutated in glycogen storage disease type Ib. Transmembrane segment 11 of UhpT, the sugar phosphate carrier of Escherichia coli, is an alpha-helix that carries determinants of substrate selectivity. jb.asm.org /cgi/content/full/184/8/2108   (4122 words)

Glycogenesis In the next step the phosphate is moved to the C-6 position to give glucose 6-phosphate, a cross road compound. First individual glucose molecules are hydrolyzed from the chain, followed by the addition of a phosphate group at C-1. Glucagon is released from the pancreas in response to low blood glucose and epinephrine is released in response to a threat or stress. www.elmhurst.edu /~chm/vchembook/604glycogenesis.html   (620 words)

Glucose-6 Phosphate Dehydrogenase Deficiency (G6PD) Glucose-6 phosphate dehydrogenase deficiency (G6PD) is a hereditary enzyme defect that can result in anemia. What are the risk factors of glucose-6 phosphate dehydrogenase deficiency? Pregnant women, especially in areas where G6PD deficiency is prevalent, should avoid exposure to the drugs and foods that can lead to hemolysis in G6PD deficient persons. www.med.umich.edu /1libr/aha/umg6pd.htm   (833 words)

Acute Inhibition of Glucose-6-Phosphate Translocator Activity Leads to Increased De Novo Lipogenesis and Development of Hepatic Steatosis Without Affecting VLDL Production in Rats -- Bandsma et al. 50 (11): 2591 -- Diabetes Ihara K, Kuromaru R, Hara T: Genomic structure of the human glucose 6-phosphate translocase gene and novel mutations in the gene of a Japanese patient with glycogen storage disease type Ib. Doiron B, Cuif MH, Chen R, Kahn A: Transcriptional glucose signalling through the glucose response element is mediated by the pentose phosphate pathway. Glucose-6-phosphatase (G6Pase) is a key enzyme in hepatic glucose diabetes.diabetesjournals.org /cgi/content/full/50/11/2591   (5106 words)

Glucose 6-phosphate dehydrogenase antibodies from Research Diagnostics Inc Glucose 6-phosphate dehydrogenase antibodies from Research Diagnostics Inc Immunogen: synthetic peptide which represented a portion of human Glucose-6-Phosphate Dehydrogenase encoded in part by exon 6 and in part by exon 7 (LocusLink ID 2539) Buffer: 0.02 M Potassium Phosphate, 0.15 M Sodium Chloride,pH 7.2 www.researchd.com /miscabs/gluc6pd.htm   (336 words)

Annals of General Psychiatry Full text Psychotic mania in glucose-6-phosphate-dehydrogenase-deficient subjects The first study dates back to 1962, when Dern et al [6] reported a not-otherwise-described temporary psychosis during primaquine administration in two G6PD-deficient subjects several weeks after the subsidence of acute hemolytic anemia. Hothersall JS, Greenbaum AL, McLean P: The functional significance of the pentose phosphate pathway in synaptosomes: protection against peroxidative damage by catecholamines and oxidants. Maker HS, Weiss C, Silides DJ, Cohen G: Coupling of dopamine oxidation (monoamine oxidase activity) to glutathione oxidation via the generation of hydrogen peroxide in rat brain homogenates. www.general-hospital-psychiatry.com /content/2/1/6   (3488 words)

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