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phosphorylase/кариес
Врската е зачувана во таблата со исечоци
Страница 1 од 34 резултати
Simultaneous assay of adenosine deaminase and purine nucleoside phosphorylase activity as possible biochemical means to detect non-Hodgkin lymphomas of the oral cavity.
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METHODS
This study proposes the usefulness of simultaneous assay of adenosine deaminase (enzyme code [EC] 3.5.4.4; ADA) and purine nucleoside phosphorylase (EC 2.4.2.1; PNP) activities in a biopsy specimen as a biochemical test adjunctive to the histologic diagnosis of oral non-Hodgkin lymphomas
Synthesis of N-glucopyranosidic derivatives as potential inhibitors that bind at the catalytic site of glycogen phosphorylase.
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Glycogen phosphorylase (GP) is a promising molecular target for the treatment of Type 2 diabetes. The design of potential inhibitors for the catalytic site of the enzyme is based on the high affinity for β-D-glucopyranose and the presence of a β-cavity that extends from the sugar anomeric position
Inhibition of rabbit muscle glycogen phosphorylase by D-gluconohydroximo-1,5-lactone-N-phenylurethane.
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The effect of the beta-glycosidase inhibitor D-gluconohydroximo-1,5-lactone-N-phenylurethane (PUG) on the kinetic and ultracentrifugation properties of glycogen phosphorylase has been studied. Recent crystallographic work at 2.4 A resolution [D. Barford et al. (1988) Biochemistry 27, 6733-6741] has
Kinetic and crystallographic studies on 2-(beta-D-glucopyranosyl)-5-methyl-1, 3, 4-oxadiazole, -benzothiazole, and -benzimidazole, inhibitors of muscle glycogen phosphorylase b. Evidence for a new binding site.
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In an attempt to identify leads that would enable the design of inhibitors with enhanced affinity for glycogen phosphorylase (GP), that might control hyperglycaemia in type 2 diabetes, three new analogs of beta-D-glucopyranose, 2-(beta-D-glucopyranosyl)-5-methyl-1, 3, 4-oxadiazole, -benzothiazole,
Synthesis of 5-chloro-N-aryl-1H-indole-2-carboxamide derivatives as inhibitors of human liver glycogen phosphorylase a.
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A series of 5-chloro-N-aryl-1H-indole-2-carboxamide derivatives were prepared and evaluated as inhibitors of human liver glycogen phosphorylase a (hLGPa). One compound, 5-chloro-N-[4-(1,2-dihydroxyethyl)phenyl]-1H-indole-2-carboxamide (2f), inhibited hLGPa with an IC(50) of 0.90microM. The pyridine
3'-Azidothymidine in the active site of Escherichia coli thymidine phosphorylase: the peculiarity of the binding on the basis of X-ray study.
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The structural study of complexes of thymidine phosphorylase (TP) with nucleoside analogues which inhibit its activity is of special interest because many of these compounds are used as chemotherapeutic agents. Determination of kinetic parameters showed that 3'-azido-3'-deoxythymidine
Three-dimensional structure of thymidine phosphorylase from Escherichia coli at 2.8 A resolution.
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The three-dimensional structure of thymidine phosphorylase from Escherichia coli has been determined at 2.8 A resolution using multiple-isomorphous-replacement techniques. The amino acid sequence deduced from the deoA DNA sequence is also reported. Thymidine phosphorylase exists in the crystal as an
Subunit interactions and the allosteric response in phosphorylase.
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The contribution of intersubunit interactions to allosterically induced conformational changes in phosphorylase are considered. Phosphorylase a, Pa (phosphorylated at Ser-14), is significantly in the active (R) conformation, while phosphorylase b, Pb (nonphosphorylated), is predominantly in the
Identification of aspartic acid-203 in human thymidine phosphorylase as an important residue for both catalysis and non-competitive inhibition by the small molecule "crystallization chaperone" 5'-O-tritylinosine (KIN59).
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Thymidine phosphorylase (TP) is a catabolic enzyme in thymidine metabolism that is frequently upregulated in many solid tumors. Elevated TP levels are associated with tumor angiogenesis, metastasis and poor prognosis. Therefore, the use of TP inhibitors might offer a promising strategy for cancer
Glycogen phosphorylase as a target for type 2 diabetes: synthetic, biochemical, structural and computational evaluation of novel N-acyl-N´-(β-D-glucopyranosyl) urea inhibitors.
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Glycogen phosphorylase (GP), a validated target for the development of anti-hyperglycaemic agents, has been targeted for the design of novel glycopyranosylamine inhibitors. Exploiting the two most potent inhibitors from our previous study of N-acyl-β-D-glucopyranosylamines (Parmenopoulou et al.,
Crystallographic and computational studies on 4-phenyl-N-(beta-D-glucopyranosyl)-1H-1,2,3-triazole-1-acetamide, an inhibitor of glycogen phosphorylase: comparison with alpha-D-glucose, N-acetyl-beta-D-glucopyranosylamine and N-benzoyl-N'-beta-D-glucopyranosyl urea binding.
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4-Phenyl-N-(beta-D-glucopyranosyl)-1H-1,2,3-triazole-1-acetamide (glucosyltriazolylacetamide) has been studied in kinetic and crystallographic experiments with glycogen phosphorylase b (GPb), in an effort to utilize its potential as a lead for the design of potent antihyperglycaemic agents. Docking
Plasmodium falciparum purine nucleoside phosphorylase: crystal structures, immucillin inhibitors, and dual catalytic function.
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Purine nucleoside phosphorylase from Plasmodium falciparum (PfPNP) is an anti-malarial target based on the activity of Immucillins. The crystal structure of PfPNP.Immucillin-H (ImmH).SO(4) reveals a homohexamer with ImmH and SO(4) bound at each catalytic site. A solvent-filled cavity close to the
In silico/in vitro study of hybrid D-modified steroidal alkylator anticancer activity using uridine phosphorylase as target protein.
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BACKGROUND
In order to reduce toxicity and to enhance anticancer activity of nitrogen mustards, three hybrid steroidal esters were synthesized and tested in vitro against human pancreatic cancer cells expressing uridine phosphorylase (UPase). The inhibition potency against a target protein
A new allosteric site in glycogen phosphorylase b as a target for drug interactions.
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BACKGROUND
In muscle and liver, glycogen concentrations are regulated by the coordinated activities of glycogen phosphorylase (GP) and glycogen synthase. GP exists in two forms: the dephosphorylated low-activity form GPb and the phosphorylated high-activity form GPa. In both forms, allosteric
Crystal structure of sucrose phosphorylase from Bifidobacterium adolescentis.
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Around 80 enzymes are implicated in the generic starch and sucrose pathways. One of these enzymes is sucrose phosphorylase, which reversibly catalyzes the conversion of sucrose and orthophosphate to d-Fructose and alpha-d-glucose 1-phosphate. Here, we present the crystal structure of sucrose
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