protein polysaccharide interactions in aqueous medium

... expressed as C-terminally His6-tagged apoproteins in E coli, purified and tested for PCB-binding, apoprotein folding, Pr–Pfr photochromicity and thermal reversion using SDS ⁄ PAGE ⁄ zinc fluorescence ... other protein bilin interactions, as studies with blocking reagents and of autoassembly kinetics have implied [15–17] In free PCB at neutral pH the two central ring nitrogens share a single ... corresponding ekmax determined relative to the known value in HCl ⁄ MeOH Holophytochrome Holoproteins were prepared in darkness by mixing the apoprotein at 5–100 lm with a 10-fold molar excess of PCB in...

Ngày tải lên: 30/03/2014, 11:20

... electrostatic interactions [60] (d) For the Transient RNA protein interactions in RNA folding human mRNA-binding protein hnRNP A1 [61], the Xenopus laevis protein X1rbpa [54], the trypanosome guideRNA-binding ... the properties of the three protein classes, with the main focus being on RNA chaperones and annealer proteins Specifically binding proteins A specific protein cofactor binds to its RNA target through ... 1637 Transient RNA protein interactions in RNA folding M Doetsch et al Tat peptide induced a change in the population of coexisting and interchanging RNA conformations The lack of intermolecular...

Ngày tải lên: 14/02/2014, 19:20

... 53–56 34 Tollin G (1995) Use of flavin photochemistry to probe intraprotein and interprotein electron transfer mechanisms J Bioenerg Biomembr 27, 303–309 Supporting information The following supplementary ... cob(I)alamin from CH3-H4-folate, generating H4-folate and the methylcob(III)alamin form of MS During primary turnover, the homocysteine-binding domain (dotted barrel) and the CH3-H4-folate binding-domain ... dimethylbenzimidazole base is buried within the protein scaffold, well removed from the corrin ring, suggesting that the lower-coordinated Co state preferentially binds to hMS [7] Herein, we report for the first...

Ngày tải lên: 18/02/2014, 08:20

... repeatedly in studies of the oligomerization of GPCRs and other protein protein interactions [34–40] In these studies, BRET has been measured using Rluc and enhanced yellow fluorescent protein (EYFP) ... alternate interpretation of the lack of agonist-induced BRET observed in this study is that the translation of agonist binding to the ATDs of the family C GPCR homodimer into G -protein coupling of ... to a degree comparable to that of WT AT1aR BRET in living cells To evaluate the ability of our assay to detect BRET caused by protein protein interactions, light emission spectra were recorded...

Ngày tải lên: 08/03/2014, 09:20

... method in determining protein linkage Its greatest advantage is the direct visualization of protein protein interactions under controlled conditions In contrast, other established protein biochemical ... the CSQ-binding element JUN, show decreased protein protein interactions during fiber type shifting and the ageing process Reduced protein coupling between the major elements regulating Ca2+homeostasis ... changes in protein interactions between other SR Ca2+-regulatory proteins might also be involved in triggering impaired triadic signal transduction resulting in a progressive functional decline of...

Ngày tải lên: 08/03/2014, 10:20

... Ala72 in Nedd8, and Arg72 in ubiquitin (highlighted in yellow in Fig 2C) Matching E1 residues are Thr149 in uba2, Arg190 in uba3 and Gln608 in uba1 (highlighted in purple in Fig 3E) Interestingly, ... polycomb protein Pc2 and the nucleoporin RanBP2 [33] PIAS proteins PIAS proteins are characterized by a so-called SPRING (Siz ⁄ PIAS-RING) domain, and bind both ubc9 and substrate proteins However, ... upon protein binding (C) Sequences of proteins aligned in (B) Residues in capitals are aligned among all modifiers, including the strictly conserved residues in red and other aligned residues in...

Ngày tải lên: 30/03/2014, 04:20

... protein RNA interactions in virus stability is not completely understood, and we have investigated these questions in this work We sought to determine the role of protein RNA and protein protein interactions ... coat protein and RNA has been investigated [5,9,23,24], and amino acid–nucleotide interactions contributing to its stability have been characterized [13,25], but the role of protein protein and protein RNA ... affected in their protein RNA and protein protein interactions have been produced [8,9] We recently described a comparative study with three ts mutants of bacteriophage MS2, in which in each mutant...

Ngày tải lên: 30/03/2014, 11:20

... to inoculate a preculture The bacteria were allowed to grow in ampicillin-containing nutrient broth medium at 37°C overnight These cultures were used to inoculate l of a main culture containing ... and dried in airflow The binary complexes were obtained by mixing 10 μl of μM solutions of appropriate individual proteins in 50 KP, pH 7.4 Then, the mixture was incubated for 10 min, diluted ... visualization of individual non-monomerized and monomerized CYP11A1 protein molecules, the appropriate protein solution was diluted in 50 mM Kphosphate buffer, pH 7.4 (50 KP) to obtain μM protein concentration;...

Ngày tải lên: 21/06/2014, 11:20

... Conservation of interacting proteins by degree Conservation of interacting proteins by degree (a) Each protein in the yeast interaction network was examined for orthologous proteins in the five higher ... transferred between organisms using interologs Briefly, interactions from organism X are inferred in organism Y if the two interacting proteins from X have orthologs in Y Applying the same approach as ... proteins was normalized against the number of interactions where both proteins have localization data in order to control for differences in protein annotation in each organism Permutation testing...

Ngày tải lên: 14/08/2014, 07:21

... alanine scanning energetics experiments in protein binding [21] as a 'gold-standard' test set (see Materials and methods) In such an alanine scan, residues in the binding interface of a protein ... Pfam Interactions from structure 11,392 protein structures Experimental protein interactions 92,900 protein pairs Select disease mutations with homologous interacting structure Filter out proteins ... clustering in MPZ mutations Brain 2004, 127:371-384 Finn RD, Marshall M, Bateman A: iPfam: visualization of proteinprotein interactions in PDB at domain and amino acid resolutions Bioinformatics...

Ngày tải lên: 14/08/2014, 08:20

... The initial list of the interactions and proteins represented in each of the existing human protein interaction datasets with total interactions, unique self -interactions and unique non-self interactions ... 6,580 interactions between 3,737 proteins By combining these interactions with the 26,280 interactions from other sources, we obtained a final set of 31,609 interactions between 7,748 human proteins ... between proteins, either based on proteins sharing annotation or physically interacting Generally speaking, we expect more accurate protein interaction datasets to be more enriched in these protein...

Ngày tải lên: 14/08/2014, 14:21

... or other inter -protein interactions The identification by Abe and colleagues (1) of an amino acid substitution in the NS1 protein of B19 genotype that could not be observed in NS1 proteins isolated ... AnnexinV binding Graphic representation of the means of three independent experiments, demonstrating the percentage of EGFP or EGFP-fusion protein expressing HepG2 cells that bind AnnexinV-PE, ... and BamH1 in order to insert a fragment encoding the Enhanced GFP (EGFP) protein http://www.medsci.org Int J Med Sci 2010, obtained from pEGFP-C1 (Clontech Laboratories Inc., Saint-Germain-en-Laye,...

Ngày tải lên: 26/10/2012, 09:32

... and Ventura F (2001) Monitoring of pesticides in drinking and related waters in NE Spain with a multiresidue SPE-GC-MS method including an estimation of the uncertainty of the analytical results, ... monitoring of MPP oxides in drinking water is required to evaluate the acute toxicity of MPP because human population could be exposed to MPP oxon sulfone through the drinking water and other aqueous ... CONCLUSIONS In this study, the possible genesis of MPP oxide derivatives in the environment was investigated as well as their potential toxicity to humans in a cholinesterase assay The in vitro...

Ngày tải lên: 05/09/2013, 10:15

... mitogen-activated protein kinase (MAPK) (Shapiro et al 1998; Zecevic et al 1998) play a role in the spindle checkpoint (Table 1) Table Proteins involved in mitotic spindle checkpoint regulation Protein Proposed ... binds to Bub1 and BubR1 Protein kinase, essential for establishment and maintenance of the spindle checkpoint Protein kinase, binds to INCENP, other substrates: CENP-A, Rec8, vimentin, desmin, ... vimentin, desmin, the kinesin MCAK, histone H3 Protein kinase, binds to INCENP and Aurora B Protein kinase Identified in Drosophila, binds to Zw10 Identified in Drosophila, binds to Rod Mad2 BubR1...

Ngày tải lên: 25/10/2013, 21:20

... rates and catalyst stability in the Pd/batophenanthroline-catalyzed olefin oxidations was observed in the presence of Under such conditions, the catalyst-containing aqueous phase could be recycled ... and affords medium to excellent yields of the isolated ketones The process is much faster in largely aqueous solutions, such as above, than in wet organic solvents; in acetone, containing only 0.5 ... to a yield of 98 % in M chloride solutions (Scheme 8.2) [13] With olefins other than ethene two isomeric chlorohydrins can be obtained, one of them being chiral When pyridine was replaced by...

Ngày tải lên: 23/12/2013, 07:19

... compounds, such as drugs, and for mechanistic investigations in reaction kinetics During catalytic hydrogenations in homogeneous aqueous solutions or in aqueous- organic biphasic systems there is ... mild method for removal of protecting allyl groups under exceedingly mild conditions In an interesting reaction, reshuffling of functional groups can be achieved in the rearrangement of homoallylic ... of isomerizations is in that all atoms of the starting compound are incorporated into the product, respresenting a 100 % atom economy Miscellaneous catalytic reactions in aqueous media 267 which...

Ngày tải lên: 23/12/2013, 07:19

... behind cyclodextrins 10.2 Application of cyclodextrins and other host molecules in aqueous organometallic catalysis An overview of the literature on the application of host-guest interactions in ... catalyzed by complexes bearing a sulfonated phosphine ligand, and majority of the above reactions involved higher olefins or aromatics In principle, cyclodextrins can interact with both the substrate, ... Rh-catalyst/ combination steadily increased upon each recycling In the fourth run with the recycled aqueous catalyst phase a was obtained, an almost 50 % increase compared to the activity shown in the...

Ngày tải lên: 23/12/2013, 07:19

... proteins has been not been demonstrated [5,6,17] Data are emerging that point to perilipin as a key player in directing proteins involved in lipolysis to a subset of lipid droplets [5] Interestingly, ... phosphorylation induces a conformational change that increases the accessible hydrophobic surface area, enabling freer access to the lipid-binding site, in return for weaker binding This is well in line ... phosphorylation This gain in hydrophobic surface area presumably accounts for the increase in in vitro activity of HSL following PKA phosphorylation through increased binding between HSL and the...

Ngày tải lên: 18/02/2014, 11:20

... suggesting that an open N-terminal signal domain is critical for protein targeting to the ER (Fig 2D) In contrast to the targeting of CYP1A1 requiring N-terminal truncation, we have shown that intact ... mitochondria were incubated with increasing concentrations of digitonin (0–0.4%; 0–400 lgÆmg)1 protein) for 30 as described in the text The digitonin-insoluble (pellet, left panel) and digitonin-soluble ... 1A1 proteins were localized inside of the inner membrane Moreover, the imported + ⁄ 1A1 and + 33 ⁄ 1A1 proteins were extractable with alkaline Na2CO3 as shown in Fig 2C, suggesting that both proteins...

Ngày tải lên: 18/02/2014, 16:20

... cationic proteins, with high isoelectric point values Thus we investigated the effects Table Natural and engineered RNases investigated in this study IC50 is the RNase concentration producing half-maximal ... homologous to the RNases investigated in this study, have been isolated from human eosinophils, namely eosinophil-derived neurotoxin (EDN) and eosinophil cationic protein (ECP) They are RNases ... the hinge loop after ligation Also in this case no clashes were detected at Electrostatic interactions and antitumor RNases the dimer interface of the models or in the surroundings of the hinge...

Ngày tải lên: 19/02/2014, 06:20