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Báo cáo khoa học: Stability and fibril formation properties of human and fish transthyretin, and of the Escherichia coli transthyretin-related protein potx

Báo cáo khoa học: Lysophosphatidylcholine modulates fibril formation of amyloid beta peptide doc

Báo cáo khoa học: Lysophosphatidylcholine modulates fibril formation of amyloid beta peptide doc

... freezing the samples.Assessment of Ab fibril formation on the basis of ThT fluorescence The presence of b-sheet structures and the kinetics of fibril formation were monitored by means of ThT fluorescencespectroscopy. ... lg of synthetic Ab monomer was incu-bated in fibril formation buffer in the presence of 0.2 l gofsonicated Ab fibrils in a total volume of 50 lLat37°C for the indicated times. Then fibril formation ... examine the mech-anisms by which LPC influences fibril formation of Ab(1-40) and Ab(1-42).ResultsEffects of LPC on Ab(1-42) fibril formation To investigate the effects of LPC on Ab(1-42) fibril formation, ...
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Báo cáo khoa học: Stability and fibril formation properties of human and fish transthyretin, and of the Escherichia coli transthyretin-related protein potx

Báo cáo khoa học: Stability and fibril formation properties of human and fish transthyretin, and of the Escherichia coli transthyretin-related protein potx

... ª 2009 FEBS 2011 Stability and fibril formation properties of human and fish transthyretin, and of the Escherichia coli transthyretin-related protein Erik Lundberg1, Anders Olofsson2, Gunilla ... with the thermostability of its tetrameric and monomericstructures.Thermostability and protein structuresWe have analyzed the structures of hTTR (Protein Data Bank code: 1F41 [12]), sbTTR (Protein ... the low thermo- stability of the ecTRP protein, with a Tmvalue approx-imately 26 °C below the values for both sbTTR and hTTR (Fig. 7). The inability of ecTRP to form fibrilsat low pH can therefore...
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Báo cáo khoa học: GlnK effects complex formation between NifA and NifL in Klebsiella pneumoniae docx

Báo cáo khoa học: GlnK effects complex formation between NifA and NifL in Klebsiella pneumoniae docx

... control both syn-thesis and activity of nitrogenase in response to o xygen and nitrogen availability, because of the high energy demands of nitrogen fixation and the oxygen sensitivity of nitrogenase[1,2]. ... conditions. Protein synthesis of approximately equivalent amounts of all threeproteins was induced from plasmid pRS209, which contains the operon malE-nifLA and gln K under the control of the tac ... electropora-tion.Construction of plasmidsPlasmid pRS201 contains the K. pneumoniae nifLA operon,5¢-fused to the Escherichia coli malE gene in pMAL-c2 (NewEngland Biolabs) which is under the control of the tacpromoter....
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Báo cáo khoa học: Soluble recombinant CD69 receptors optimized to have an exceptional physical and chemical stability display prolonged circulation and remain intact in the blood of mice doc

Báo cáo khoa học: Soluble recombinant CD69 receptors optimized to have an exceptional physical and chemical stability display prolonged circulation and remain intact in the blood of mice doc

... after injection. Moreover, the exclusion of the protein in urine and faeces, and uptake by the liver, was relatively low. On the otherhand, the least stable human CD69NS84 protein dis-played a rapid ... biochemical stability. Interest-ingly, the stability of the short proteins CD69NV82 and CD69NS84 is much lower using these criteria,both from the point of view of their physical stability upon ... further reduction of this protein in this area, and particularly the removal of the amino acids forming the third stalk disulfide bridge, is detrimental to the stability of such soluble CD69 proteins...
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Báo cáo khoa học:

Báo cáo khoa học: "Veterinary decision making in relation to metritis - a qualitative approach to understand the background for variation and bias in veterinary medical records"

... at the herd level. They perceive the collection of the data in and of itself as the basis for taking relevant actionat the farm. They may skip the process of systematic anal-ysis of data and ... understanding with regard to decision levelsBased on analysis of the veterinarians' perceptions of howthey wished to use the metritis score in their practice and on dialogue with the farmer and ... adjusting of the score to fit to the treatment decision. This category of veterinarians based the treatment decision on an overallevaluation of the case, irrespective of the existence of scores.5)...
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Tài liệu Báo cáo khoa học: Role for nectin-1 in herpes simplex virus 1 entry and spread in human retinal pigment epithelial cells docx

Tài liệu Báo cáo khoa học: Role for nectin-1 in herpes simplex virus 1 entry and spread in human retinal pigment epithelial cells docx

... in terms of its ability toenter the cells of the retina, the present study used reti-nal pigment epithelial (RPE) cells as a model to deter-mine the susceptibility and the mediators of HSV-1entry ... nec-tins induce formation of filopodia and lamellipodiathrough the respective activation of Cdc42 and Racsmall G proteins. J Biol Chem 277, 50749–50755.Supporting information The following supplementary ... post-transfection, the target and the effector cells were mixed together (1 : 1 ratio) and cocultivated in 24-well dishes. The activation of the reporter luciferase gene as a measure of cell fusion...
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Tài liệu Báo cáo khoa học: 2,5-diamino-6-ribitylamino-4(3H)-pyrimidinone 5¢-phosphate synthases of fungi and archaea docx

Tài liệu Báo cáo khoa học: 2,5-diamino-6-ribitylamino-4(3H)-pyrimidinone 5¢-phosphate synthases of fungi and archaea docx

... synthase. The putative genes were of two types, either with the two-domain architecture of the RibG protein of Bacil-lus subtilis or the RibD protein of E. coli, respectively[18–20], or the single-domain ... catalysing the transfer of deuterium from the 4(R) position of NADPH to the 1¢ (S) position of the substrate. Theseresults are in agreement with the known three-dimensional structure of the M. jannaschii ... using yeasts and eubacteria have nowcompletely replaced chemical synthesis of the tracenutrient [9]. The biosynthesis of the vitamin is summarised inFig. 1. Although the final part of the pathway...
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Tài liệu Báo cáo khoa học: DNA modification with cisplatin affects sequence-specific DNA binding of p53 and p73 proteins in a target site-dependent manner pptx

Tài liệu Báo cáo khoa học: DNA modification with cisplatin affects sequence-specific DNA binding of p53 and p73 proteins in a target site-dependent manner pptx

... cisplatin and the ability of the particular p53target site to accommodate the cisplatin IACs. The higher the probability of formation of the cisplatinIACs within the p53DBSs due to the occurrence of the ... weights of the p73 isoforms. To verify the specificity of the bandshifts for DNA complexes with the proteins studied,we used the band supershift assay with antibodiesagainst the p53 or p73 proteins. ... in the genome of living cells is naturally stochastic on the one hand, and influenced by the actual structural and functional state of the given chromatin domainon the other. Moreover, some of the...
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Tài liệu Báo cáo khoa học:Symmetric fluoro-substituted diol-based HIV protease inhibitors Ortho-fluorinated and meta-fluorinated P1/P1¢-benzyloxy side groups significantly improve the antiviral activity and preserve binding efficacyy docx

Tài liệu Báo cáo khoa học:Symmetric fluoro-substituted diol-based HIV protease inhibitors Ortho-fluorinated and meta-fluorinated P1/P1¢-benzyloxy side groups significantly improve the antiviral activity and preserve binding efficacyy docx

... and retained the binding efficacy. The flexibility of the target molecule complicates the prediction of an effectcaused by a modification on the inhibitor and necessitatesstructural analysis of ... 2004Structure of the complexes The crystal structures of the six protease–inhibitor com-plexes have been solved and refined down to 1.8–2.3 A˚resolution with Rcryst and Rfree of 18.1–19.9% and 20.0–22.5%, ... is observedin all complexes. The difference Fourier m aps, 2Fo–Fc and Fo–Fc, unambiguously indicate the conformation of the inhibitors and t he position of the fluorine s ubstitutions inP1/P1¢...
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Tài liệu Báo cáo khoa học: Various secretory phospholipase A2 enzymes are expressed in rheumatoid arthritis and augment prostaglandin production in cultured synovial cells docx

Tài liệu Báo cáo khoa học: Various secretory phospholipase A2 enzymes are expressed in rheumatoid arthritis and augment prostaglandin production in cultured synovial cells docx

... (Fig. 3Dc). These results,together with the results of RT-PCR and western blot(Fig. 1), implies that the expression of sPLA2-IIF inRA is rather lower than that of other sPLA2s and doesnot ... sPLA2to evaluate the expression and localization of six sPLA2s (IIA, IID,IIE, IIF, V and X) in human joints affected by RA.We further examined the possible contribution of thesesPLA2s to ... Redundant and segregatedfunctions of granule-associated heparin-binding group IIsubfamily of secretory phospholipases A2in the regula-tion of degranulation and prostaglandin D2synthesis inmast...
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