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Báo cáo khoa học: Nucleotide binding to human UMP-CMP kinase using fluorescent derivatives ) a screening based on affinity for the UMP-CMP binding site potx

Báo cáo khoa học: Nucleotide binding to human UMP-CMP kinase using fluorescent derivatives ) a screening based on affinity for the UMP-CMP binding site potx

Báo cáo khoa học: Nucleotide binding to human UMP-CMP kinase using fluorescent derivatives ) a screening based on affinity for the UMP-CMP binding site potx

... phosphonate analogs that is based on the affinity of the acceptor -binding site of the human UMP-CMP kinase. Several uracil vinylphosphonate derivatives had affinities for human UMP-CMP kinase similar ... Authors Journal compilation ª 2007 FEBS Nucleotide binding to human UMP-CMP kinase using fluorescent derivatives ) a screening based on affinity for the UMP-CMP binding site Dimitri Topalis1,*, ... mm) that displacedMABA-CDP were further studied in competition titrations. The IC50value at half-displacement was related to the D. Topalis et al. UMP-CMP kinase and acyclic phosphonate analogsFEBS...
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Báo cáo khoa học: Re-evaluation of intramolecular long-range electron transfer between tyrosine and tryptophan in lysozymes Evidence for the participation of other residues doc

Báo cáo khoa học: Re-evaluation of intramolecular long-range electron transfer between tyrosine and tryptophan in lysozymes Evidence for the participation of other residues doc

... In the seconds time range there is a final slow radical decay. This reaction was always second-order representing a radical–radical recombination reaction(e.g. dimerization of TyrOÆradical). ... protein concentration an average second-orderrate constant of (9.5 ± 0. 9) · 108LÆmol )1 Æs )1 (25 °C) for TEWL was calculated. Similar second-order rate constantswere obtained for the other lysozymes ... least-squares fitting to the absorbance data. The numbering of the amino acid residuesin each lysozyme protein follows that of the Protein DataBank (PDB) of the Brookhaven National Laboratories.Irradiated...
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Báo cáo khoa học: Catalytic activation of human glucokinase by substrate binding – residue contacts involved in the binding of D-glucose to the super-open form and conformational transitions ppt

Báo cáo khoa học: Catalytic activation of human glucokinase by substrate binding – residue contacts involved in the binding of D-glucose to the super-open form and conformational transitions ppt

... initia-tion of the global conformational transition; and (c) to gain some insight into how the local torsional stressesat the contact residues in the super-open state propa-gate through the ... cosub-strate (MgATP 2) ) and thus catalysis. Moreover, the maximal activation of rat liver glucokinase by Glc and the related overall conformational transition, as fol-lowed in real-time by ... Glc at all at physiological concentrations of Glc and they are essen-tially catalytically inactive. Only in the range 200–1600 mM was measurable activity observed for N20 4A, N23 1A and E25 6A. The...
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Tài liệu Báo cáo khoa học: Reversible tetramerization of human TK1 to the high catalytic efficient form is induced by pyrophosphate, in addition to tripolyphosphates, or high enzyme concentration ppt

Tài liệu Báo cáo khoa học: Reversible tetramerization of human TK1 to the high catalytic efficient form is induced by pyrophosphate, in addition to tripolyphosphates, or high enzyme concentration ppt

... groups of ATPare necessary for tetramerization, and that kinetics and tetramerization areclosely related. Furthermore, the enzyme concentration was found to have a pivotal effect on catalytic ... conditions with 100 lMdThd. The molecular markers (vertical bars)are (from left to right): b-amylase (200 kDa),BSA (66 kDa), ovalbumin (45 kDa), carbonicanhydrase (30 kDa) and cytochromec ... transition to the catalyti-cally highly active form was observed at concentrationsof hTK1 below 10 ngÆmL )1 (0.4 nm) [12]. Therefore,transition does not occur at the low assay concentrationof...
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Báo cáo khoa học: Viral entry mechanisms: human papillomavirus and a long journey from extracellular matrix to the nucleus docx

Báo cáo khoa học: Viral entry mechanisms: human papillomavirus and a long journey from extracellular matrix to the nucleus docx

... at a conserved cleavage site. Host cell CyPB facilitates the L2 conforma-tion changes. ( 3) These events may induce an additional conformational change that either reduces the affinity of capsids ... addition to the aforementionedconformational changes, the reported transport alongfilopodia towards the cell body prior to internalizationmay contribute to the delayed kinetics [58]. Filopodia-assisted ... attached to ECM after addition of bacteriallyexpressed CyPB [53], indicating that the L2 conforma-tional change requires engagement with the cell surfacereceptor and possibly L1 conformational change(s).Taken...
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Báo cáo khoa học:

Báo cáo khoa học: "Learning From Collective Human Behavior to Introduce Diversity in Lexical Choice" potx

... categories.Table 2 shows the unigram, bigram, and trigram- based average κ between the two human annotators (Human1 , Human2 ). These results suggest that human annotators can reach substantial agreementwhen ... 2003;Nenkova and Passonneau, 200 4). These evaluationmethods assess the information content in the sum-maries that are generated automatically.Finally, recent research on analyzing online so-cial ... =Pr (a) −Pr(e)1−Pr(e)where P r (a) is the relative ob-served agreement among annotators, and P r(e) is the probability that annotators agree by chance ifeach annotator is randomly assigning categories.Table...
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Tài liệu Báo cáo khoa học: Autolytic activity of human calpain 7 is enhanced by ESCRT-III-related protein IST1 through MIT–MIM interaction pptx

Tài liệu Báo cáo khoa học: Autolytic activity of human calpain 7 is enhanced by ESCRT-III-related protein IST1 through MIT–MIM interaction pptx

... Kazusa DNA Research Institute (Chiba,Japan), using a pair of primers (forward, 5¢-CTAGAATTCAACAGCACAGCATGCTGG-3¢; reverse, 5¢-AGAGAATTCTGCCTGGTTTAAGAGACC-3¢; restriction sitesunderlined). ... identified.Although calpain 7 contains a C2-like domain, it lacks a penta-EF-hand domain and is classified as an atypicalcalpain. As one of the significant structural features,mammalian calpain 7 ... suggests that calpain 7 also functions as a protease rather than as a structural protein in mamma-lian cells, and that MIT domains are involved in cal-pain 7 activation. This notion leads us to suggest...
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Tài liệu Báo cáo khoa học: Hypoxic resistance to articular chondrocyte apoptosis – a possible mechanism of maintaining homeostasis of normal articular cartilage pdf

Tài liệu Báo cáo khoa học: Hypoxic resistance to articular chondrocyte apoptosis – a possible mechanism of maintaining homeostasis of normal articular cartilage pdf

... fibrillation: grade 0, no inflammation;grade 1, slight inflammation; grade 2, strong inflammation. The cartilage damage severity of the femoral condylesand tibial plateau was graded from 0 to 4: grade ... flexed.Digital pressure was applied to the medial side of the straight patellar ligament. A 21-gauge spinal needle wasinserted through the fat pad into the intercondylar spacelateral to the straight patellar ... macroscopicsynovial inflammation and cartilage damage were evaluatedwith digital high-resolution photographs. The severity ofsynovial inflammation was graded on the basis of colour,angiogenesis and fibrillation:...
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Tài liệu Báo cáo khoa học: Chemical approaches to mapping the function of post-translational modifications ppt

Tài liệu Báo cáo khoa học: Chemical approaches to mapping the function of post-translational modifications ppt

... ARTICLEChemical approaches to mapping the functionof post-translational modificationsDavid P. Gamblin, Sander I. van Kasteren, Justin M. Chalker and Benjamin G. DavisChemistry Research Laboratory, Department ... LewisX-tetrasaccharide on the surface of the protein. Quantitative conversionscan be obtained for the chemical glycosylation andeach of these subsequent enzymatic glycosylations,leading ultimately to ... modification strategy was used to mimic a putative glycoprotein domain of human Tamm–Hors-fall protein, which carries two glycans, and the intro-duction of two glycans onto a galactosidase (lacZ)reporter...
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Tài liệu Báo cáo khoa học: Peptides corresponding to helices 5 and 6 of Bax can independently form large lipid pores pdf

Tài liệu Báo cáo khoa học: Peptides corresponding to helices 5 and 6 of Bax can independently form large lipid pores pdf

... pro-death proteins, such as cytochrome c,which are released into the cytoplasm as a consequenceof apoptotic signals. The release of these apoptoticfactors involves alteration of the mitochondrial ... Yethon JA, Epand RF, Leber B, Epand RM &Andrews DW (200 3) Interaction with a membrane sur-face triggers a reversible conformational change in Baxnormally associated with induction of apoptosis. ... regulatorsof the apoptotic cascade, controlling the release of apoptotic factors from the mitochondrial intermembrane space. A helical hairpin found in the coreof water-soluble folds of these...
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