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Báo cáo khoa học: Piecing together the structure of retroviral integrase, an important target in AIDS therapy pptx

Báo cáo khoa học: Piecing together the structure of retroviral integrase, an important target in AIDS therapy pptx

Báo cáo khoa học: Piecing together the structure of retroviral integrase, an important target in AIDS therapy pptx

... observed in HIV-1 IN. Thus, the number of amino acids forming the linker in ASV IN is muchsmaller than in HIV-1 IN, although the distancebetween the start and end points of these linkers is ... complexes of the IN- binding domain (IBD) of LEDGF with the CCD of HIV-1 IN [35], and with the NTD–CCD of HIV-2 IN [59]. The IBD used in theseexperiments included residues 347–442 of LEDGF. The complex ... area of 379 A˚2). Owing to the symmetry of the complex, the second IBD interacts with the corre-sponding areas of molecules B and A of the CCD. The interactions of the IBD with the CCD in the...
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Tài liệu Báo cáo khoa học: Insights into the structure of plant a-type phospholipase D Susanne Stumpe, Stephan Konig and Renate Ulbrich-Hofmann ¨ ppt

Tài liệu Báo cáo khoa học: Insights into the structure of plant a-type phospholipase D Susanne Stumpe, Stephan Konig and Renate Ulbrich-Hofmann ¨ ppt

... an important role in the regulation of cellular pro-cesses in plants and mammals. Moreover, they are an essential tool in the synthesis of phospholipids and phospholipid analogs. Knowledge of ... constants in the ranges of 0.1 mmand 10–20 mm can be confirmed. The stability of PLDa2 proved to be sub-stantially reduced in the presence of calcium ions, with salt-induced aggre-gation being the ... remaining parts of the molecules. Most mam-malian PLDs contain a PX and a PH domain instead of the C2 domain in plants, whereas microbial PLDslack such probably regulatory domains.Despite the...
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Báo cáo khoa học: Relationship between the structure of guanidines and N-hydroxyguanidines, their binding to inducible nitric oxide synthase (iNOS) and their iNOS-catalysed oxidation to NO pptx

Báo cáo khoa học: Relationship between the structure of guanidines and N-hydroxyguanidines, their binding to inducible nitric oxide synthase (iNOS) and their iNOS-catalysed oxidation to NO pptx

... NOHA[10], nothing is known about the thermodynamics andkinetics of the binding of guanidines and N-hydroxy-guanidines to iNOS. Removal of the a-amino ora-carboxylate moiety of l-Arg has important effects ... for the synthesis of the guanidines andN-hydroxyguanidines used in this study. DL-G thanksZhi-Qiang Wang, Chin-Chuan Wei and KoustubhPanda (Cleveland Clinic Foundation) for their helpwith the ... respectively.DiscussionBinding of guanidines and N-hydroxyguanidinesto iNOSoxy In the series of guanidines and N-hydroxyguanidinesstudied here, the ratio between the Kappor Kd(calcula-ted using Eqn 1¢) of...
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Tài liệu Báo cáo khoa học: Evidence that the assembly of the yeast cytochrome bc1 complex involves the formation of a large core structure in the inner mitochondrial membrane pdf

Tài liệu Báo cáo khoa học: Evidence that the assembly of the yeast cytochrome bc1 complex involves the formation of a large core structure in the inner mitochondrial membrane pdf

... addition of ISP and Qcr10p).On the other hand, in the transition from the 500 kDaband to the 670 kDa band, a structural rearrangement of the bc1complex may occur due to the binding of ISPand ... specificallyrequired for the insertion of ISP into an immature bc1complex and that the association of the Qcr9p subunitwith the bc1complex precedes the binding of ISP. In fact, the direct absence of ISP (DISP), ... comparable amounts in both yeast strains. Therefore, the reason for the disap-pearance of the bc1dimer in the yeast strain in whichQcr10p is missing remains unknown.On the basis of all the above...
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Báo cáo khoa học: A unique tetrameric structure of deer plasma haptoglobin – an evolutionary advantage in the Hp 2-2 phenotype with homogeneous structure pot

Báo cáo khoa học: A unique tetrameric structure of deer plasma haptoglobin – an evolutionary advantage in the Hp 2-2 phenotype with homogeneous structure pot

... Schematic drawing of tandem repeat region (B and B1) of deer and human a-chain. The most significant feature of human a2 is that itmatches the ABC domains of a1 but with an additional insertion of a redundant ... used in antioxidant therapy [8–10]. Transfection of Hp cDNA into Chinesehamster ovary (CHO) cells protects them against oxi-dative stress [9].Human Hp is one of the largest proteins in the plasma, ... of deer Hp protein beinga tetramer In addition to the superior binding affinity of Hp tohemoglobin, Hp is an anti -in ammatory molecule anda potent antioxidant [9]. In humans, the large compli-cated...
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Tài liệu Báo cáo khoa học: Looking for the ancestry of the heavy-chain subunits of heteromeric amino acid transporters rBAT and 4F2hc within the GH13 a-amylase family ppt

Tài liệu Báo cáo khoa học: Looking for the ancestry of the heavy-chain subunits of heteromeric amino acid transporters rBAT and 4F2hc within the GH13 a-amylase family ppt

... is the lack of domain B protruding out of the TIM barrel in the place of loop 3 connecting the b3-strand to the a3-helix [9,21]. Sharing domain B by rBATs andGH13 enzymes, and especially the ... in region I covering the b3-strand; (b) a segment of up to five residues(307_GVDGF in human rBAT) preceding the func-tional arginine (arginine 197 in oligo-1,6-glucosidase) in region II of the ... the b-strandsb2, b3, b4 and b8 of the (b ⁄ a)8barrel domain, and forrBAT also with the short stretch near the C-terminus of domain B [9,19]. From the sequence structure point of view, the basic...
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Tài liệu Báo cáo khoa học: Hypoxia reduces the expression of heme oxygenase-2 in various types of human cell lines A possible strategy for the maintenance of intracellular heme level pdf

Tài liệu Báo cáo khoa học: Hypoxia reduces the expression of heme oxygenase-2 in various types of human cell lines A possible strategy for the maintenance of intracellular heme level pdf

... whereas HO-2 contains at least two copies of a potential heme-binding site, consisting of the cysteineand proline (CP motif) [7,8]. Importantly, these CPmotifs are not involved in heme breakdown ... subjected to northern blot analysis. Each lane contains15 lg of total RNA. The bottom panel shows the expression of b-actin mRNA as an internal control. (B) Western blot analysis. The indicated cells ... decreased the expression levels of HO-2mRNA and protein in Jurkat T-lymphocytes andYN-1 and K562 erythroid cell lines.To further analyze the effects of hypoxia on the expression of HO-1 and HO-2,...
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Tài liệu Báo cáo khoa học: Insights into the interaction of human arginase II with substrate and manganese ions by site-directed mutagenesis and kinetic studies Alteration of substrate specificity by replacement of Asn149 with Asp docx

Tài liệu Báo cáo khoa học: Insights into the interaction of human arginase II with substrate and manganese ions by site-directed mutagenesis and kinetic studies Alteration of substrate specificity by replacement of Asn149 with Asp docx

... results indicate the existence of high and low affinity bindings of mangan-ese ions to arginase II and provide an explanation for the manganese stoichiometries determined here. Con-sidering the ... His145Asnmutations on the affinity of metal bindingto arginase IITo further examine the effects of the His120fiAsnand His145fiAsn mutations on the interaction of the enzyme with manganese ions, maximally ... byagmatine hydrolysis, in studying the inhibitory effect of agmatine on arginine hydrolysis, reactions were followedby measuring the formation of ornithine, determined by the method of Chinard...
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Báo cáo khoa học: Structural and functional aspects of unique type IV secretory components in the Helicobacter pylori cag-pathogenicity island potx

Báo cáo khoa học: Structural and functional aspects of unique type IV secretory components in the Helicobacter pylori cag-pathogenicity island potx

... loop, the first and lastturns of helices E and F, and the C-terminus helices Iand J. In addition, there is a lysine-rich N- and C-ter-minus, in accordance with the basic isoelectric point of CagS. ... runs anti-parallel to the same strand of a second monomer, allowing for the formation of the dimer. The surface of interactionbetween monomers also involves portion of chains Dand E of the two ... was independent of the various testedcag mutants, these findings may indicate that CagDis released into the supernatant during host cell infec-tion by an unknown independent mechanism and thenbinds...
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Báo cáo khoa học: Studies on the role of the receptor protein motifs possibly involved in electrostatic interactions on the dopamine D1 and D2 receptor oligomerization pdf

Báo cáo khoa học: Studies on the role of the receptor protein motifs possibly involved in electrostatic interactions on the dopamine D1 and D2 receptor oligomerization pdf

... to the dopamine D2receptor and its genetic variants,D2R1, D2R2, which were localized in the plasma mem-brane and inside the cell. In the case of the dopa-mine D2receptor mutants, the ... in uence of an epitope from the third intracellularloop (ic3) of the dopamine D2receptor, which contains adjacent arginineresidues (217RRRRKR222), and an acidic epitope from the C-terminus of the ... protein 4.1 N, a member of the 4.1 family,facilitates the transport of D2R to the cell surface byinteracting with the N-terminal portion of the ic3 loop of D2R via its C-terminal domain [66]....
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