flow force formulation of cell transports
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progress in botany. 73 [electronic resource]
Ngày tải lên :
29/05/2014, 23:58
... cell transport in order to get a Flow/ Force description of the uptake of solutes 4.2.1 Conventional Formulation of Cell Transport The conventional formulation of cell transport was created for ... conventional formulation aimed to derive precise molecular parameters from the measurement of fluxes into the whole, macroscopic system 4.2.2 Flow/ Force Formulation of Cell Transports Principle of the Flow/ Force ... intercellular junctions of most cells and to covalent bonding in the internal part of the wall of the epidermal cells Both types of bond were coexisting in the intercellular junctions of the cortical...
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Báo cáo khoa học: Protein–protein interactions and selection: yeast-based approaches that exploit guanine nucleotide-binding protein signaling doc
Ngày tải lên :
06/03/2014, 11:20
... for the detection of signaling, owing to stagnation of cell growth [66,67], whereas the synchronization of the cell cycle in G1 arrest provides uniform levels of expression of reporter genes ... Identification of a gene necessary for cell cycle arrest by a negative growth factor of yeast: FAR1 is an inhibitor of a G1 cyclin, CLN2 Cell 63, 999–1011 49 Chang F & Herskowitz I (1992) Phosphorylation of ... assessment of signaling levels [61–64,66–68] Gene disruption for system modification The arrest of the cell cycle caused through phosphorylation of Far1p allows for the examination of pheromone...
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Báo cáo khoa học: Protein–protein interactions and selection: generation of molecule-binding proteins on the basis of tertiary structural information potx
Ngày tải lên :
06/03/2014, 11:20
... different species [23–25] The success of the series of studies shows that the stable framework structure of Fv enables the transfer of function by means of CDR replacement Barbas et al first designed ... Functionalization of small scaffold proteins by replacing a loop of the scaffold protein with a CDR loop of antibody fragments (A) Replacement of the candidate location in NCS for grafting with the CDR loop of ... grafting the CDR loop of the single variable heavy chain of a heavy-chain camel antibody (VHH) (Fig 1B) by comparing topologies between VHH and NCS (Fig 2A); grafting of the CDR loop of antilysozyme...
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Báo cáo y học: "Natural selection of protein structural and functional properties: a single nucleotide polymorphism perspect" potx
Ngày tải lên :
14/08/2014, 08:21
... proportion of coding sequence (CDS) within 70 bp of an exon-intron junction Genes were grouped into bins of nine equal intervals according to the proportion of sequence within 70 bp of an exon-intron ... higher A/S ratio of 0.33 compared with 'multicellular organismal development', 'transport', 'macromolecule metabolic process', and 'cell differentiation' (Figure 6a) In terms of molecular function, ... 0.3 0.4 0.5 0.6 0.7 0.8 0.9 Proportion of CDS within 70 base pairs of an intron exon junction Figure sequence (CDS) within 70 bp of an exon-intron proportion of coding The SNP A/S ratio negatively...
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Development of a novel toll like receptor based two hybrid assay for detecting protein protein interactions and its application in the study of CD14 dimerization and FcyRIIA activation
Ngày tải lên :
12/09/2015, 08:20
... number of factors including transfection efficiency of the given cell type, the quality and quantity of DNA taken up by the cells, the cytotoxicity of the transfection reagent and the condition of ... IV 2.1.2.13 Preparation of competent cells 71 2.1.2.14 Transformation of competent cells 72 2.1.2.15 Identification of positive clones by PCR 72 2.1.2.16 Identification of positive clones by restriction ... severe forms of the syndrome than humans, displaying the absence of B cells, natural killer cells and T cells (Cao et al., 1995; Sugamura et al., 1996) These phenotypes reflected the loss of cytokine...
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Báo cáo khoa học: On peptide bond formation, translocation, nascent protein progression and the regulatory properties of ribosomes ppt
Ngày tải lên :
23/03/2014, 17:22
... various binding modes of those analogs is identical to that of ASM [8], and analyses of these modes indicate that the chemical nature of each analog may dictate the properties of its binding mode ... relevance Analysis of the properties of this region illuminated a unified mechanism for the formation of the peptide bond, the translocation of the tRNA molecules and the entrance of nascent proteins ... conjunction with peptide bond formation, and the shift of the acceptor stems of the tRNA Sovereign motions of structural features of the tRNA, although of a different nature, were suggested previously...
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Tài liệu Báo cáo khoa học: Cobalamin uptake and reactivation occurs through specific protein interactions in the methionine synthase–methionine synthase reductase complex docx
Ngày tải lên :
18/02/2014, 08:20
... Fluorescence titration of the FMN domain with the hMS AD Fig S2 Comparison of the electrostatic potentials of the surface of the CPR FMN domain and of a model of the FMN domain of human MSR Fig S3 ... addition of homocysteine following of incubation at 37 °C of the enzyme with all other components Following 10 of incubation at 37 °C, the reaction was quenched by the addition of 0.2 mL of a solution ... potentials for the surface of the CPR FMN domain (in the region of the solventexposed FMN) with that of a homology model of the MSR FMN domain (based on the structure of the CPR FMN domain; Protein...
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Tài liệu Báo cáo khoa học: Interleukin-1-inducible MCPIP protein has structural and functional properties of RNase and participates in degradation of IL-1b mRNA doc
Ngày tải lên :
18/02/2014, 14:20
... Expression of the MCPIP gene after stimulation of HepG2 cells with IL-6 (15 ngÆmL)1) Cells were stimulated for 4, 8, 12 and 24 h Unstimulated cells served as a control (C) Changes in expression of the ... Changes in the expression of the MCPIP gene after stimulation of HepG2 cells with IL-1b (15 ngÆmL)1) Cells were stimulated for 0.25, 0.5, 1, 2, 4, 8, 12 and 24 h Unstimulated cells collected at each ... regulates the half-life of IL-1b mRNA and its own transcript Overexpression of MCPIP in cells activated with LPS results in downregulation of the IL-1b transcript and silencing of MCPIP gene expression...
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Tài liệu Báo cáo khoa học: The conformational stability of the Streptomyces coelicolor histidine-phosphocarrier protein Characterization of cold denaturation and urea–protein interactions doc
Ngày tải lên :
19/02/2014, 12:20
... actinomycetes which grow on a variety of carbon sources, such as cellulose and several types of mono- and di-saccharides They are the source of approximately two thirds of all natural antibiotics currently ... in the transport of carbohydrates across the cell membrane of bacteria via the phosphoenolpyruvatedependent sugar phosphotransferase system (PTS) [14,15] involves the transfer of a phosphoryl ... The complete genome of Streptomyces coelicolor has been sequenced, showing the largest number of genes found in any bacteria [24] The presence of the different components of the PTS in S coelicolor...
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Tài liệu Báo cáo Y học: Ligand interactions and protein conformational changes of phosphopyridoxyl-labeled Escherichia coli phosphoenol pyruvate carboxykinase determined by fluorescence spectroscopy pdf
Ngày tải lên :
21/02/2014, 01:21
... spectra of lM P-pyridoxyl-E coli PEP carboxykinase using kexc ẳ 326 nm, in the presence of dierent combinations of substrates and metal ions: (a) in the absence of ligands; and in the presence of ... (Table 1) An independent estimation of the binding afnity of PEP for E coli PEP carboxykinase was obtained from the quenching of the emission of Trp residues of the unlabeled protein When the protein ... presence of saturating concentrations of Mn2+, the intrinsic uorescence was quenched by 10% In spite of this small effect of PEP on the Trp emission, the uorescence decrease as function of free...
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Báo cáo khoa học: Versatile regulation of multisite protein phosphorylation by the order of phosphate processing and protein–protein interactions pptx
Ngày tải lên :
07/03/2014, 10:20
... Fidelity of T cell activation through multistep T cell receptor f phosphorylation Science 281, 572–574 Komeili A & O’Shea EK (1999) Roles of phosphorylation sites in regulating activity of the ... kinetics of multiple phosphorylation have also been invoked for controlling the timing and specificity of cell- cycle progression and circadian rhythms [22,33–35] The theoretical analysis of multisite ... smallness of the enzyme concentration compared Kinetic models of multisite phosphorylation to those of the reactants, cannot be applied in a straightforward manner to protein phosphorylation in cell...
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Báo cáo khoa học: Supramolecular calsequestrin complex Protein–protein interactions in chronic low-frequency stimulated muscle, postnatal development and ageing pot
Ngày tải lên :
08/03/2014, 10:20
... isoform of the Ca2+-ATPase; mAb IID8 against the slow SERCA2 isoform of the Ca2+-ATPase, and mAb IIG12 to muscle triadin) and Upstate Biotechnology, Lake Placid, NY, USA (pAB to the RyR1 isoform ... Coomassiestained gel (A) of microsomal preparations and identical blots (B–G) labeled with antibodies to the fast SERCA1 isoform of the Ca2+-ATPase (B), the RyR1 isoform of the Ca2+-release channel ... self-aggregation of triadin [27], the 94 kDa band of the fast isoform is often accompanied by high-molecular-mass bands in fast-twitch muscle (Fig 2E) The decreased relative density of fast triadin...
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Báo cáo khoa học: Biochemical properties of the human guanylate binding protein 5 and a tumor-specific truncated splice variant Mark Wehner and Christian Herrmann doc
Ngày tải lên :
15/03/2014, 10:20
... incomplete picture of the cellular functions of hGBP1 Previous studies showed an antiviral effect against specific viruses [10,11], and an anti-Chlamydia effect [12], inhibition of endothelial cell proliferation ... the lack of GMP formation (see Fig S2) The similar hydrolytic activities of the a ⁄ b and C-terminally truncated forms of hGBP5 are in contrast to that of the analogous deletion mutant of hGBP1 ... Healthcare, Munich, Germany) The cell was loaded with 150 lm of protein and was titrated against a 3-fold excess of nucleotide by 20 injection steps of 1.8 lL each using 2.25 mm of each nucleotide All...
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Báo cáo Y học: Transcriptional activity of interferon regulatory factor (IRF)-3 depends on multiple protein–protein interactions pdf
Ngày tải lên :
17/03/2014, 10:20
... 293T cells are a SV40 large T antigenexpressing highly transfectable derivative of 293 cells, which are derived from human embryonic kidney cells transformed with human adenovirus type These cell ... the virus-dependent activation of IRF-3 To this end, we examined the phenotypes of a variety of hIRF-3 mutants by performing cotransfections in SAN cells These cells are derived from a human ... expression of WT IRF-3 in 293T cells led to the detection of two new complexes as compared to extracts from cells transfected with empty Fig IRF-3E5 is further modified upon transfection in mammalian cells...
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Báo cáo khoa học: HIP/PAP, a C-type lectin overexpressed in hepatocellular carcinoma, binds the RIIa regulatory subunit of cAMP-dependent protein kinase and alters the cAMP-dependent protein kinase signalling ppt
Ngày tải lên :
23/03/2014, 13:20
... PC8 clones seeded at a density of · 105 cells per 35 mm diameter dish were transfected with lg of total DNA including either lg of TK-LUC reporter plasmid or lg of CRE-TK-LUC reporter plasmid ... clones Results Identification of the RIIa regulatory subunit of PKA as a partner of HIP/PAP In order to assess the biological consequences of HIP/PAP expression in hepatocellular carcinoma, we looked ... DNA, 1120 bp of which encoded for the C-terminal portion of the RIIa regulatory subunit of PKA No hepatic cell line expressing HIP/PAP was available Thus we have established hepatic cell models...
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Báo cáo khoa học: Calcium-dependent protein–protein interactions induce changes in proximity relationships of Cys48 and Cys64 in chicken skeletal troponin I ppt
Ngày tải lên :
23/03/2014, 21:20
... activity of unextracted myofibrils in the absence of Ca2+ was 21% of that in the presence of Ca2+ As expected, the myofibrillar ATPase activity showed no Ca2+ dependence following extraction of TnC ... compared the effects of sTnC and cTnC to test if an isoform-specific interaction of TnI and TnC is required for the Ca2+induced proximity change in the two N-terminal cysteines of TnI Materials and ... biological activity is expressed in terms of the ability of the modified TnI to modulate Ca2+ regulation of myofibrillar ATPase activity Following extraction of TnC and TnI from skeletal myofibrils,...
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Báo cáo khoa học: Structural and mutational analyses of protein–protein interactions between transthyretin and retinol-binding protein doc
Ngày tải lên :
30/03/2014, 02:20
... (Table 1) The contact surface of TTR is characterized by a prevalence of hydrophobic residues in the case of the subunits B and C and of hydrophilic residues in the case of the subunit A Val20, Trp79, ... surfaces of RBP and Fab are shown in Fig 1C Mutational analysis of the RBP-binding determinants of TTR The amino acid sequences of RBP and TTR from different vertebrate species showing the residues of ... the polarity of the microenvironment at the interface, thereby impairing protein–protein recognition A reduction of the steric hindrance of the side chain of Ile84 as a consequence of the I84A...
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dna–protein interactions principles and protocols second edition - tom moss
Ngày tải lên :
08/04/2014, 12:51
... barrier However, in the case of DNAprotein interactions, the problem of quantity and hence of detection is often offset by the high degree of selectivity and stability of DNA protein interactions ... kinetics of complex assembly to be followed both in vitro and in vivo When I decided to edit a second edition of the present volume, I was of course aware of the limitations of many of the more ... of techniques commonly available to molecular biologists DNAprotein complexes may be studied at three distinct levelsat the level of the DNA, of the protein, and of the complex At the level of...
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Báo cáo hóa học: " Viable chimaeric viruses confirm the biological importance of sequence specific maize streak virus movement protein and coat protein interactions" pdf
Ngày tải lên :
20/06/2014, 01:20
... probes for intracellular and intercellular trafficking in plants Plant Cell 1999, 11:535-548 Gafni Y, Epel BL: The role of host and viral proteins in intraand inter-cellular trafficking of geminiviruses ... detailed model of mastrevirus movement has yet to be elucidated Modularity of genetic elements Although the idea of the modularity of genetic elements is inherent in the traditional concept of the gene, ... out of 320 nucleotide positions, resulting in the alteration of 22 out of 101 MP amino acid residues [Additional file 3]; switching the 697 bp cp led to 153 nucleotide changes affecting 39 out of...
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