gaga structural basis for single cys2his2 zinc finger dna interaction
Tài liệu Báo cáo khoa học: Structural basis for cyclodextrin recognition by Thermoactinomyces vulgaris cyclo⁄maltodextrin-binding protein ppt
... open form to a closed form [16] In EcoMBP, the closed form has been observed in the complexes with linear maltooligosaccharides, such as maltose, maltotriose and maltotetraose [17], and this form ... In contrast, the open form does not have the ability to perform the proper interaction with the MalFGK2 sugar-transporter complex Interestingly, EcoMBP adopts the open form in the unliganded ... defined in terms not of the affinities for sugars but of whether the protein adopts the open form or the closed form TvuCMBP–c-CD complex is seen as the closed form (Fig 2A,B), and this structure...
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Báo cáo khoa học: The structural basis for catalytic function of GMD and RMD, two closely related enzymes from the GDP-D-rhamnose biosynthesis pathway pdf
... before each run by washing with 0.2 m sodium hydroxide, water, and running buffer, each for Samples were introduced by pressure injection for s (for reaction composition analysis) or 24 s (for ... nearly identical to those reported for GDP-d-Rha [5] On the basis of these NMR findings, compound D was concluded to be GDP-a-d-Rha These results for His6-RMDPa therefore confirm that this enzyme is ... GDP-6-deoxy-d-lyxo-hexos-4-ulose, a GMD reaction was performed for h, the enzyme was removed by filtration, and then enzyme and cofactor for the second reaction were added To determine the optimal pH for enzyme-catalyzed reactions,...
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Báo cáo khoa học: Structural basis for the erythro-stereospecificity of the L-arginine oxygenase VioC in viomycin biosynthesis docx
... the Research Collaboratory for Structural Bioinformatics under accession numbers 2WBO for the substrate•tartrate•iron complex, 2WBQ for the complex with hArg, and 2WBP for the complex with hArg•succinate•iron ... more than 2% for financial support Work by M G Thomas was supported, in part, by the National Institutes of Health (AI065850) References Research Collaboratory for Structural Bioinformatics protein ... substrate-binding mode results from conformational control of the enzyme on the side chain rotamer of the bound substrate For example, in AsnO, a trans conformer is selected for the v1 torsion angle of...
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Báo cáo khoa học: Structural basis for recognition of Co2+ by RNA aptamers pot
... in the formation of nonstandard H-bonding Additionally, in the proposed loop E-like motif structure, the aforementioned N7 position of G25 is exposed to interaction with Co2+ and such interactions ... regions to which DNA oligomers hybridize become less accessible in more compact aptamer structures upon Co2+ binding and this process prevents the DNA RNA duplex formation necessary for the RNase ... UÆmL)1 of DNA Taq polymerase The reaction was performed on Biometra (Goettingen, Germany) UNO II ¨ thermocycler for six cycles (30 s at 93 °C, 30 s at 55 °C and at 72 °C) The double-stranded DNA was...
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Báo cáo Y học: Structural basis for the inhibitory efficacy of efavirenz (DMP-266), MSC194 and PNU142721 towards the HIV-1 RT K103N mutant doc
... been observed [18] In this study we present the structural indications for the role of K103 and N103 in drug binding and the structural implications for the inhibitory efficacy of the inhibitors ... optimal van der Waals distance for close packing interactions The interactions of Efavirenz to the substituted N103 residue is conserved compared to the wild-type except for the contact with Cc The ... Arnold, E (1997) Protein–nucleic acid interactions and DNA conformation in a complex of human immunodeficiency virus type reverse transcriptase with a double-stranded DNA template-primer Biopolymers...
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Báo cáo khoa học: Structural basis for substrate recognition by Erwinia chrysanthemi GH30 glucuronoxylanase potx
... Tyr290 side chains, and also forms one hydrogen bond with the Trp289 amide nitrogen, NE1 The most important interaction for substrate recognition appears to be an ionic interaction between the positively ... A–ligand complex A B Fig Stereoview of the interactions of XynA with MeGlcA2Xyl3 and imidazole (IMD) (A) Enzyme–MeGlcA2Xyl3 interactions (for clarity, Ser258, forming a hydrogen bond to MeGlcA, is ... to present a hypothesis for the basis of substrate recognition in this group of so-called ‘appendage-dependent xylanases’ [11] Examination of the structure of XynA [14] for the presence of aromatic...
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Báo cáo khoa học: Structural basis for the recognition of complex-type biantennary oligosaccharides by Pterocarpus angolensis lectin ppt
... The second conformation of the side chain of Glu221, which also adopts two conformations but not correlated with the anomeric form of the bound mannose is shown in dark green site for subunit B ... first before binding to adjacent subsites will occur Thermodynamics of carbohydrate binding to PAL To complement our structural studies, the thermodynamic parameters for the binding to PAL for mannose, ... the protein for all conformations due to the b(1–2) linkage A second possibility is that the b(1–2) linkage adopts two different conformations, both of which result in favorable interactions...
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Báo cáo khóa học: Acyl-CoA dehydrogenases and acyl-CoA oxidases Structural basis for mechanistic similarities and differences pot
... the structural basis for the decarboxylation reaction must await a complete structural analysis of the enzyme in complex with substrate/analog Electron transfer flavoprotein (ETF) and its interaction ... suggesting that its role is purely structural Very little structural information is available regarding the interaction between mammalian ACADs and ETF Stable complex formation between these two flavoproteins ... known in peroxisomes, ACO is protected from forming an electron-transfer complex with an ETF-like molecule, should one exist Therefore, the structural basis for ACO being an oxidase rather than a...
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Báo cáo khoa học: Structural basis for stereo-specific catalysis in NAD+-dependent (R )-2-hydroxyglutarate dehydrogenase from Acidaminococcus fermentans pptx
... (numbers for HGDH) Lowercase letters indicate amino acid sequence insertions The residues discussed below are coloured red for arginine, blue for glutamate and aspartate, green for histidine, cyan for ... of HicDH (ternary complex in open conformation; colour code as for panel A) Atom colour code as for panel A and 2-oxoisocaproate in grey for carbons and red for oxygen atoms (D) Stereo display ... determine the substrate specificity Structural basis for substrate stereorecognition and hydride transfer The structural analysis of HGDH and its comparison with other structurally characterized members...
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Báo cáo khoa học: Structural basis for the interaction between dynein light chain 1 and the glutamate channel homolog GRINL1A docx
... interaction takes place However, titration with peptide VETREIGVGCDLLPS results in large chemical shift changes for numerous resonances, providing evidence for a specific interaction (Fig 3) For ... (ITC) have been reported for a few DYNLL1–target peptide complexes, ranging from 0.6 to lm for Bim and swallow to lm for dynein intermediate chain, 10 lm for nNOS and 100 lm for PAK1 [22,27,28] In ... lowest-energy conformers from the selected cluster modelled using the Haddock docking calculations The rmsd values for the 20 lowest-energy conformers of the best cluster are ˚ ˚ 0.71 ± 0.11 A for the...
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Báo cáo khoa học: Structural basis for the changed substrate specificity of Drosophila melanogaster deoxyribonucleoside kinase mutant N64D docx
... to the 3¢-OH group of the substrate while there is no density for that interaction in the mutant structure (Fig 2B) Structural basis for altered properties of the N64D mutant The LID region in ... feedback inhibitor to reveal the structural basis for these phenomena Crystal structure of the N64D–dTTP complex The Dm-dNK–dTTP complex crystallizes in a monoclinic form that has two dimers in the ... density The interactions with dTTP are very similar to the interactions in the wildtype Dm-dNK–dTTP complex, and the conformational changes of Glu52 are the same [21] In wildtype Dm-dNK, Asn64 forms...
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Báo cáo khoa học: Structural basis for poor uracil excision from hairpin DNA An NMR study pptx
... conformations that are partially in stretched out form (Fig 4) as was seen in the case of U2-hairpin [4] Such stretched-out conformation could be the reason why Ó FEBS 2002 Structural basis for ... K.V.R (2000) Structural basis for uracil DNA glycosylase interaction with uracil: NMR study Nucleic Acids Res 28, 1906–1912 Ghosh, M., Kumar, N.V., Varshney, U & Chary, K.V.R (1999) Structural ... (1997) DNA glycosylases in the base excision repair of DNA Biochem J 325, 1–16 Kumar, N.V & Varshney, U (1997) Contrasting effects of single stranded DNA binding protein on the activity of uracil DNA...
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Báo cáo khoa học: A structural basis for the pH-dependence of cofilin F-actin interactions potx
... the surface of cofilin No evidence for pH dependent conformational changes in the structure of cofilin We could find no evidence for substantial pH-dependent conformational changes in cofilin that ... able to demonstrate that this was the case for both ADP and ATP–actin (not Fig Effect of pH on the interaction of actin with cofilin (A) Effect of pH on the interaction of RITC-actin with cofilin Binding ... variation was similar for the two pH values used (12% effect) (Fig 3) The interaction of the peptide 84–103 corresponding to a part of site was also checked As previously reported for site 1, competition...
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Structural basis for the inhibition mechanism of HUman CSE and a study on c CBL complexes
... al., 1998) Since then, four human Sprouty (Spry) isoforms were discovered They were able to form heterodimers (with its isoforms) and homodimers for enhanced inhibition properties (Bundschu et al., ... surface plasmon resonance studies 40 Chapter II Structural Basis for the Inhibition Mechanism of human Cystathionine-γ-Lyase: An enzyme Responsible for the Production of H2S 41 2.1 Introduction ... is acute tubular necrosis score for control (sham), renal IRI, or renal IRI with NaHS (100 mmol/kg, ml/kg onto kidneys) administered 15 before 45 ischemia and before h reperfusion (IRI NaHS) *P
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Structural basis for recruitment of traffic proteins by small GTPases
... regulations Structural and biochemical studies of small GTPases showed that there are two interconvertible forms of small GTPases: a GDP-bound inactive form and a GTPbound active form In the GDP-bound form, ... acid sequences in several regions responsible for specific interactions with guanine nucleotides, GDP and GTP Structurally, there are five loops that form the guanine nucleotide binding sites The ... STRUCTURAL BASIS FOR RECRUITMENT OF TRAFFIC PROTEINS BY SMALL GTPASES WU MOUSHENG (B.Sc., M.Sc) Xiamen University A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY...
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báo cáo khoa học: " Chemically synthesized zinc finger molecules as nano-addressable probes for double-stranded DNAs" ppt
... of the zinc finger molecules (see Figures and 4) However, these were sufficient for our experiments We have measured for the first time the specific binding of synthetic single- motif zinc finger ... synthesized zinc finger probes, which were of the C2H2 type (Figure 1) The DNA- binding region was altered in two places to enable the folded zinc finger to bind either at the "AAA" -DNA sequence ... α-Helix is formed by amino acids No -1, 1, 2, 3, L, and Results and discussion In our experiments we used one of the three zinc finger motifs of the SP1 -zinc- finger as a template for our chemically...
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Báo cáo y học: " Proviral HIV-genome-wide and pol-gene specific Zinc Finger Nucleases: Usability for targeted HIV gene therapy Misaki Wayengera" ppt
... HIV-pol gene/HIV-1-proviral -dsDNA binding zinc finger arrays and construct of HIV-pol gene/HIV-1-proviral-dsDNA cleaving zinc finger nucleases First, using the Zinc Finger Consortium’s software ... of the ‘-GNN-3 ‘ family of DNA sequences by zinc finger domains J Mol Biol 2000, 303(4):489-502 34 Mandell JG, Barbas CF: Zinc finger tools: custom DNA- binding domains for transcription factors ... restriction enzymes created by covalently linking a DNA- binding zinc finger (Zif) domain (composed of three to six finger- arrays) to the non-specific DNA cleavage domain (or simply FN) of the Flavobacterium...
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Social factors as a basis for treatment
... evidence base It is unclear, therefore, which clubhouse elements are effective and which standards are necessary for success 175 Social factors as a basis for treatment Conclusion Social factors ... for people with psychosis until the 1970s (Bond, 1992; Lehman, 1995) Traditional ‘train and place’ vocational services designed for people with physical disabilities have proven ineffective for ... States 173 Social factors as a basis for treatment A jail diversion programme People suffering from both substance abuse disorder and serious mental illness form a significant component of the...
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Tài liệu Lecture 14: The Theoretical Basis for Data Communication: pptx
... measurement The decibel level indicates the relationship of one power level to another The formula for calculating decibel is : dB = 10 log Po/Pi = 10 log 1000mW/10mW = 10 log 100 = 10 x =20 ... power levels such as 10 thousandth of a watt (10 mW) The milliwatt is the unit of measure used for power in telecommunications circuits Rather than absolute measure of power, we often concerned ... comparison of one power level to another Such as the output power of an amplifier (RF or AF) is 1000 mW for an input power of 10 mW We can say this whole this output with one unit, such as the output...
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Tài liệu CATIA V5 Structural Analysis for the Designer P2 doc
... WS3-12 Step Apply a distributed force Steps: Select the Force icon Select the outside foot grip pads Enter -100 lbs in the Z-direction, select OK Note the Distributed Force object added to the features ... Visualize the finite element mesh in the deformed state of the system as a result of loading Steps: Select the Deformation Image Icon 2 Note the Deformed Mesh Image added to the features tree ... estimates for a given computation Steps: Select the Precision icon 2 Double click on the Estimated local error color map palette Select Impose Max for the color map palette, select OK Select the Informations...
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