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Báo cáo Y học: Inhibition of the SERCA Ca21 pumps by curcumin Curcumin putatively stabilizes the interaction between the nucleotide-binding and phosphorylation domains in the absence of ATP pot

Tài liệu Báo cáo Y học: Inhibition of nuclear pre-mRNA splicing by antibiotics in vitro pot

Tài liệu Báo cáo Y học: Inhibition of nuclear pre-mRNA splicing by antibiotics in vitro pot

... extent of splicing inhibition by tetracycline is n egligible (Fig. 2). The sixfold stron gersplicing inhibition by Cl-tetracycline may be explained by the a dditional s ize and hydrophobicity introduced ... glycoside, streptomycin, t hepenicillins, ampicillin and penicillin G, the aminocyclitol,spectinomycin, tetracycline and Cl-tetracycline, and the macrolide, erythromycin) on n uclear b-globin ... in inhibition of spliceosome assembly. Formation of the presplicing complexes A and B was slightly reduced by increasing concentrations of erythromycin (lanes 5±7).Interestingly, formation of...
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Báo cáo Y học: Inhibition of the SERCA Ca21 pumps by curcumin Curcumin putatively stabilizes the interaction between the nucleotide-binding and phosphorylation domains in the absence of ATP pot

Báo cáo Y học: Inhibition of the SERCA Ca21 pumps by curcumin Curcumin putatively stabilizes the interaction between the nucleotide-binding and phosphorylation domains in the absence of ATP pot

... FEBS 2001 Inhibition of the Ca2þ-ATPase by curcumin (Eur. J. Biochem. 268) 6327 Inhibition of the SERCA Ca21 pumps by curcumin Curcumin putatively stabilizes the interaction between the nucleotide-binding ... as curcumin stabilizing the interaction between the nucleotide-binding and phosphorylation domains, precluding ATP binding.Keywords: SERCA; ATP binding; curcumin; phosphoryl-ation; fluorescence.Tumeric ... possiblyincreased. In order to further assess the possibility of curcumin affecting the interaction of ATP binding to the ATPase, thiswas directly measured using [32P ]ATP in the absence of Ca2þ(Fig. 4A). The...
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Tài liệu Báo cáo Y học: Inhibition of the MEK/ERK signaling pathway by the novel antimetastatic agent NAMI-A down regulates c-myc gene expression and endothelial cell proliferation ppt

Tài liệu Báo cáo Y học: Inhibition of the MEK/ERK signaling pathway by the novel antimetastatic agent NAMI-A down regulates c-myc gene expression and endothelial cell proliferation ppt

... NAMI-A-mediated inhibition of ERK1/2 phosphorylation may be lying upstream of ERK1/2.Using a serine/threonine kinase SPA assay kit, the capability of NAMI-A to affect the ERK1/2 phosphoryla-tion activity ... maintenance of tumor cell growth[3]. The finding that the ERK signaling pathway is involved in tumor cell migration and invasion [4,5], as well as in tubular formation induced by insulin in human endothelialcells ... as aninternal control for mRNA integrity and equal loading. The levels of radioactivity incorporated into c-myc product werenormalized by comparison with the levels of radioactivityincorporated...
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Báo cáo Y học: Inhibition of hyaluronan synthesis in Streptococcus equi FM100 by 4-methylumbelliferone doc

Báo cáo Y học: Inhibition of hyaluronan synthesis in Streptococcus equi FM100 by 4-methylumbelliferone doc

... points (0, 3, 5.5, 8 and 22 h), HA releasedinto the culture medium was measured by the sandwichbinding protein assay using hyaluronan binding protein(HABP) according to the manufacture’s instructions ... MU-meta-bolites in the inhibition of HA synthesis by MU in FM100cells. These above results indicate that something requiredfor a fully functional HA synthesis system is down-regulatedor inhibited in intact ... 5.5, 8 and 22 h), and the HAproduction in the culture medium was quantitated by asandwich binding protein assay using a very specific HABP(Fig. 3). By 8 h of culturing, a small amount of HA...
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Báo cáo y học:

Báo cáo y học: "Effect of corticosteroids on phlebitis induced by intravenous infusion of antineoplastic agents in rabbits"

... of 8 animals. In addition, there was inflammatory cell infiltration (Grades 1-3) in the proximal part of the vein in all 8 animals and in the distal part of the vein in 7 of the 8 animals. ... found in the proximal part of the vein in 6 of the 8 animals and in the distal part of the vein in 7 of the 8 animals. Epidermal degeneration (Grades 1-3) was found in both the proximal and ... antineoplastic agents re-duces the completion of chemotherapy. The causative factors of phlebitis include the pH and osmotic pres-sure of the solution, the size of the vein used, the size and...
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Tài liệu Báo cáo khoa học: Inhibition of cobalamin-dependent methionine synthase by substituted benzo-fused heterocycles pptx

Tài liệu Báo cáo khoa học: Inhibition of cobalamin-dependent methionine synthase by substituted benzo-fused heterocycles pptx

... allows the prediction of interactions between the pterin ring and MeTr based on the binding of hydroxymethylpterin pyrophosphate toDHPS. Following the same approach, and in order toidentify the ... N-terminalmodule is the homocysteine (Hcy)-binding domain; the second domain binds 5-methyltetrahydrofolate, the thirddomain binds CH3-Cbl; and the fourth domain (C-term-inal module) binds S-adenosyl-methionine ... wasconstructed. In the absence of a high-resolution struc-ture of the methyltetrahydrofolate-binding site for the mammalian enzyme, a model based on the X-ray crys-tal structure of the methyltetrahydrofolate...
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Tài liệu Báo cáo Y học: Characterization of an omega-class glutathione S-transferase from Schistosoma mansoni with glutaredoxin-like dehydroascorbate reductase and thiol transferase activities pptx

Tài liệu Báo cáo Y học: Characterization of an omega-class glutathione S-transferase from Schistosoma mansoni with glutaredoxin-like dehydroascorbate reductase and thiol transferase activities pptx

... performed by using different input order of the sequences. Each analysisinvolved two steps: stepwise addition and nearest neighborinterchanges. The most likely tree was obtained by using the test of ... hydrophobicligands, binding to bilirubin and carcinogens [3,4], the isomerization of maleylacetoacetate and the regulation of stress kinases and apoptosis [5,6].Based on their sequence structure, catalytic ... agarose. In all cases, protein purity wasdetermined by SDS/PAGE and protein concentration wasmeasured by bicinchoninic acid method following manu-facturers indications (Sigma). Antiserum against the...
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Báo cáo khoa học: Inhibition of recombinant human maltase glucoamylase by salacinol and derivatives pdf

Báo cáo khoa học: Inhibition of recombinant human maltase glucoamylase by salacinol and derivatives pdf

... or by activity in the C-terminaldomain of the full-size protein, thereby accounting for the inhibition by ‘acarbose’ reported previously [28].Our previous studies of the inhibitory effect of ... occurs in the lumen of the small intestinewhere the endoglycosidase a-amylase (EC 3.2.1.1)hydrolyzes the internal a-(1–4) linkages of starch whilebypassing the a-(1–6) linkages of the amylopectin ... glucoamylaseactivity, 20% of the maltase activity, and 1% of the sucrase activity [10]. Together, these two enzymes forma complex in the epithelial cells of the small intestine and complete the hydrolysis...
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Báo cáo Y học: Mechanism of 1,4-dehydrogenation catalyzed by a fatty acid (1,4)-desaturase of Calendula officinalis pptx

Báo cáo Y học: Mechanism of 1,4-dehydrogenation catalyzed by a fatty acid (1,4)-desaturase of Calendula officinalis pptx

... a-secondary isotope effect[40]. In addition, partial masking of the ÔintrinsicÕ KIE by Fig. 1. Biosynthesis of linoleate and calendate catalyzed by (1,2) and (1,4)-desaturases, respectively. OPL, ... disproportionationmechanism [23] of the type showed in Fig. 2 and the datawere used to pinpoint the site of the initial oxidative attack(ÔcryptoregiochemistryÕ) for these systems. In several cases,additional independent ... 5025other enzymic steps in the catalytic cycle such as substratebinding may also be occurring [35]. None of theseconsiderations affect the conclusions reached in this paper. The use of a competitive...
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Báo cáo Y học: Determinants of the inhibition of a Taiwan habu venom metalloproteinase by its endogenous inhibitors revealed by X-ray crystallography and synthetic inhibitor analogues pdf

Báo cáo Y học: Determinants of the inhibition of a Taiwan habu venom metalloproteinase by its endogenous inhibitors revealed by X-ray crystallography and synthetic inhibitor analogues pdf

... bonds. The Trp indole ring of the inhib-itors is stacked against the imidazole of His143 in the S)1site of the proteinase. Results from the study of syntheticinhibitor analogues showed the primary ... characteristics of inhibitor binding The P)1(binding to S)1site) Trp residue of the inhibitors. As shown in Figs 2A and 3, the indole ring of Trp in the inhibitors, which occupies the S)1site of TM-3, ... attributed to the stacking of Trp indole ring against the imidazole side chain of His143 in TM-3 and the specific hydrogen bond between the indole Ne1atom and the carbonyl oxygen of Ser167.Thus,...
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