... carboxybiotin, or slow Na+ movement through the channel to its binding site Following the decarboxylation of carboxybiotin in the reaction cycle (Fig 4B, C), the biotin prosthetic group leaves the ... residues in the vectorial and chemical events of the Na+ pump (A) shows the empty binding site region with enzyme-bound carboxybiotin (B- COO–), exposing the Na+ binding sites toward the cytoplasm (B) ... less favourable for Na+ binding The binding of Na+ to free OadB (without carboxybiotin bound) with an affinity of 20– 50 mM has in fact been described previously [3,4] Subsequently, Na+ bound to...
Ngày tải lên: 08/03/2014, 23:20
... response against MTB by increasing the infection inoculum (Vordermeier et al., 1996; Maglione et al., 2007) In addition the protection of mice against MTB infection by administration of intravenous ... study may therefore have an important bearing on the disease process The role of B cells in PTB requires further investigation as decreased B cell counts in the peripheral blood have also been reported ... reports of the lymphocyte subsets abnormalities in PTB that there has been no agreement on understanding the mechanisms underlying the disease process This issue is further complicated by the fact...
Ngày tải lên: 29/03/2014, 03:20
Báo cáo khoa học: De novo synthesis, uptake and proteolytic processing of lipocalin-type prostaglandin D synthase, b-trace, in the kidneys pptx
... was then determined by immunohistochemical staining with MAb-5C11, MAb-10A5 and MAb- 1B7 and by in situ hybridization with antisense RNA for L-PGDS mRNA (Fig 3) The staining profile by in situ hybridization ... protein detected with MAb-5C11 were localized in the distal tubules, including Henle’s loop (Fig 3E, F) MAb-10A5 showed generally much weaker staining in the tubules than that obtained with MAb- 1B7 ... proteins containing a series of amino-terminus-truncated human L-PGDS The amino-terminal amino acid residue of each mutant is indicated on the left The signal sequence of the amino-terminal 22 amino...
Ngày tải lên: 30/03/2014, 01:20
Báo cáo y học: " Placenta growth factor and vascular endothelial growth factor B expression in the hypoxic lung" docx
... has been hypothesised that PlGF plays a role in the angiogenic process by displacing VEGFA from the R1 “sink”, thereby increasing the fraction of VEGFA available to bind to VEGFR2, the main Page ... was added to the slide instead of primary antibody No staining was observed in the IgG slides, therefore indicating that the staining observed is indeed specific for VEGFB protein All images ... successfully blocked staining of the tissue therefore indicating that the staining observed is indeed specific for PlGF protein All images were taken with an x100 objective, the scale bar represents...
Ngày tải lên: 12/08/2014, 13:22
The role of b cells in the pathogenesis of atherosclerosis 1
... lymphoma-6 BCMA - B cell maturation Ag BCR - B cell receptor BHT - butylated hydroxytoluene BLIMP-1 - B lymphocyte-induced maturation protein-1 BrdU - 5-bromo-2’-deoxyuridine BSA - bovine serum albumin ... mice (lacks B2 cells but intact B1 cells) suggesting BAFFR-targeting as a possible therapeutic intervention in CAD patients (Kyaw et al., 2012) Therefore, in line with these findings, it is thus ... CD19+CD1 1b+ sIgMhisIgDlo In addition, the surface marker CD5 further delineates the B1 population into B1 a (CD5+) and B1 b (CD5-) sub-populations B1 cell populations, unlike B2 cells, are not maintained...
Ngày tải lên: 10/09/2015, 09:23
The role of b cells in the pathogenesis of atherosclerosis 2
... when examining plasma cells in the bone marrow To begin our investigation into ASCs in the bone marrow of apoE-/- mice, we maintained apoE-/- mice with thymidine analog, BrdU in drinking water ... cells in the bone marrow of apoE-/- mice Because we maintained the mice on BrdU in drinking water for one month, the result is also indicative that these plasma cells accumulated in the bone marrow ... epitope-specific antibodies in atherosclerosis (Chou et al., 2009), we examined if B1 a cell population increased in apoE-/- mice These B1 a cells had also been described to retain CD5+ marker before losing expression...
Ngày tải lên: 10/09/2015, 09:24
The role of b cells in the pathogenesis of atherosclerosis
... 2009) Therefore, the prevailing view is that IgM antibodies are associated with protective functions in atherosclerosis But what may be the underlying mechanisms confer by B cells? Studies in rabbits ... fall into the state of anergy However, it remains to be determined if APOE protein is crucial in maintaining the anergy state of B cells 4.7 Role of B cell subpopulations However, it remains unclear ... observed an increase in relative percentage and number of B1 a IgM+ plasmablasts in the PEC but noted an increased population of B1 a cells differentiating into IgM+ plasmablasts in the spleen of...
Ngày tải lên: 10/09/2015, 09:24
A study of politeness strategies in requests in the course book ''streamline english departures and connections'' by b hartley & p viney
... and (5) Doing the FTA is in the interest of the hearer As seen in the chart, the strategies (3)Overcoming Channel noise and (5)Doing the FTA is in the interest of the hearer occupy the same percentage ... things they gain in daily life and communication In this study, the author intends to investigate the requests in the course book Streamline English Departures & Connections by B. Hartley & P.Viney ... address There is a relative power of the hearer and the speaker; the social distance between the hearer and the speaker, and the ranking of the imposition involve in doing the face threatening act In...
Ngày tải lên: 14/12/2013, 00:41
Tài liệu Engineering Mechanics - StaticsChapter 1Problem 1-1 Represent each of the following combinations of units in the correct SI form using an appropriate prefix: (a) m/ms (b) μkm (c) ks/mg (d) km⋅ μN Units Used: μN = 10−6N kmμkm = 109−6Gs = 10 s pptx
... may be reproduced, in any form or by any means, without permission in writing from the publisher Engineering Mechanics - Statics Chapter Problem 2-26 The boat is to be pulled onto the shore using ... may be reproduced, in any form or by any means, without permission in writing from the publisher Engineering Mechanics - Statics Chapter Problem 2-28 The beam is to be hoisted using two chains ... sin ( θ ) F sin ( θ ) sin ⎡180 deg − ( θ + θ )⎤ ⎣ ⎦ F sin ⎡180 deg − ( θ + θ )⎤ ⎣ ⎦ Fb = = F sin ( θ ) = F a = 30.6 lb Fb sin ( θ ) sin ⎡180 deg − ( θ + θ )⎤ ⎣ ⎦ F b = 26.9 lb Problem 2-12 The...
Ngày tải lên: 17/02/2014, 14:20
Tài liệu Báo cáo khoa học: The role in the substrate specificity and catalysis of residues forming the substrate aglycone-binding site of a b-glycosidase docx
... NPbfuc NPbglc NPbgal NPbxyl MUbglc NPbfuc NPbglc NPbgal NPbxyl MUbglc NPbfuc NPbglc NPbgal NPbxyl MUbglc NPbfuc NPbglc NPbgal NPbxyl MUbglc NPbfuc NPbglc NPbgal NPbxyl MUbglc NPbfuc NPbglc NPbgal ... affect the binding of the glycone within the Sfbgly active site This hypothesis was further investigated by determining the in uence on the glycone binding of the Sfbgly interactions with the aglycone ... in an internal region of the aglycone-binding site, probably subsite +1, because they in uence the binding of the first glucose unit of the aglycone On the other hand, M453 may be positioned in...
Ngày tải lên: 18/02/2014, 17:20
Tài liệu Báo cáo khoa học: Glycation of low-density lipoprotein results in the time-dependent accumulation of cholesteryl esters and apolipoprotein B-100 protein in primary human monocyte-derived macrophages docx
... [42] The inhibition of the thiol-dependent lysosomal cathepsins by glycated proteins may be of particular importance in apoB turnover The accumulation of glycated apoB within HMDMs may be related ... lipoproteins in diabetes Diabetes Metab Rev 12, 69–90 10 Tomkin GH & Owens D (2001) Abnormalities in apo B- containing lipoproteins in diabetes and atherosclerosis Diabetes Metab Rev 17, 27–43 11 ... demonstrated by receptor-blocking experiments The rates of uptake of both the lipid and protein components are not matched by the rate of cellular metabolism of these species, resulting in the accumulation...
Ngày tải lên: 19/02/2014, 02:20
Tài liệu Báo cáo khoa học: High affinity copper binding by stefin B (cystatin B) and its role in the inhibition of amyloid fibrillation docx
... (Fig 2) The binding isotherm data were fitted to sequential binding site parameters and the best fit, producing the smallest v2 values, indicated two binding sites, both with affinities in the picomolar ... copper binding might be specific to stefin B among the three human cystatins Further support for the premise that the C-terminus could be the copper binding domain comes from studies of the P79S ... in globular proteins which bind Cu2+ specifically, the metal binding can be protective against amyloid fibril formation Therefore, maintaining correct metal ion protein interactions might be key...
Ngày tải lên: 19/02/2014, 06:20
Tài liệu Báo cáo khoa học: Effect of deletion of the DNase I hypersensitive sites on the transcription of chicken Ig-b gene and on the maintenance of active chromatin state in the Ig-b locus docx
... remove the Bsr gene from these clones by Cre recombinase, tentative recombinants were treated with tamoxifen and then blasticidin sensitive clones were obtained In the course of the study, Ig -b protein ... Following digestion of the genomic DNA with HindIII, homologous recombination and the excision of Bsr gene were confirmed by Southern hybridization using 0.9 kb DNA ()10.1 kb to )9.2 kb) as the probe ... kb band in Fig 3D are derived from the 16 kb Del allele, while the 6.6 kb band in Fig 3B, C is from the extra Ig -b gene Expression of Ig -b mRNA in DT40/Cre clones deleted in DT40-specific DHSs The...
Ngày tải lên: 19/02/2014, 16:20
Tài liệu Báo cáo Y học: The b-1,4-endogalactanase A gene from Aspergillus niger is specifically induced on arabinose and galacturonic acid and plays an important role in the degradation of pectic hairy regions pdf
... L-arabinose substitution (soy), higher oligomers appear initially, but these disappear if the incubation is continued Another difference is that only with the latter substrate arabinose-substituted ... can be explained by the structure of the polysaccharides Xylan contains single b- 1,4-linked D-galactose residues but no b- 1,4-linked galactan chains Therefore it only requires an exo-acting galactose ... This indicates that the substrate binding site in GALA that binds the reducing-end sugar is very important in enzyme substrate interaction Previous studies using an Aspergillus b- 1,4-endogalactanases...
Ngày tải lên: 21/02/2014, 01:21
Tài liệu Báo cáo Y học: The binding of lamin B receptor to chromatin is regulated by phosphorylation in the RS region ppt
... chromatin in eggs, binding through the RS region of LBR to linker DNA of chromatin seems to be predominant Then, the binding is supported by the interaction of the NM region and a protein(s) other ... in vitro assay system comprising a Xenopus egg extract and a binding assay involving sperm chromatin and beads bearing LBR fragments The binding was stimulated by preincubation of beads bearing ... point is discussed below To characterize the mode of binding of LBR to chromatin, beads bearing LBR fragments were preincubated with a DNA solution and then the binding to chromatin was examined...
Ngày tải lên: 22/02/2014, 04:20
Tài liệu Báo cáo Y học: Granule-bound starch synthase I A major enzyme involved in the biogenesis of B-crystallites in starch granules ppt
... independent recombinant strains obtained from a cross involving CS9 and IJ2 parental strains ability of GBSSI to extend amylopectin outer chains Again this coincides with a decrease in crystallinity This ... would be expected from the extension of amylopectin outer chains by GBSSI This suggests that the soluble enzyme machinery responsible for amylopectin synthesis has become inactive We therefore believe ... 6.5 kb fragment in cosmid GB911 covering most of the GBSSI coding sequences was subcloned in two overlapping parts of 3.0 and 4.5 kb and subjected to DNA sequencing thus generating a 5856 bp gDNA...
Ngày tải lên: 22/02/2014, 07:20
Báo cáo khoa học: Structural and functional roles for b-strand 7 in the a-crystallin domain of p26, a polydisperse small heat shock protein from Artemia franciscana pdf
... a-crystallin domain of each monomer is composed of nine b- strands (labeled b2 b1 0), with the b6 strand situated in a large loop, L5 ⁄ 7, located between b- strands and b- strand 10 inhabits FEBS Journal ... remaining b- strands, with the exception of strand 6, are arranged in two antiparallel beta sheets within the a-crystallin domain The interface between monomers of a dimer involves interaction between ... strands b2 and b6 of neighboring monomers The p26 modifications examined in this study are not located in either of these strands and they are not considered further As the basic p26 oligomer building...
Ngày tải lên: 07/03/2014, 12:20
Báo cáo khóa học: Disruption of the interaction between the Rieske iron–sulfur protein and cytochrome b in the yeast bc1 complex owing to a human disease-associated mutation within cytochrome b potx
... shown in light green, the compensatory mutations are shown in pink, and the hinge region of the ISP is shown in white the integration or stability of the ISP within the bc1 complex In order to investigate ... causing further inhibition of the enzyme activity An altered protein– protein interaction between the ISP hinge region and the cytochrome b extramembranous cd2 helix may result in enzyme instability ... samples, inhibited the activity in samples from the patient This was in agreement with the data obtained in this study, using the mutant yeast enzyme It has been reported that a mutation in the hinge...
Ngày tải lên: 07/03/2014, 15:20
Báo cáo khoa học: Interaction of human stefin B in the prefibrillar oligomeric form with membranes Correlation with cellular toxicity doc
... Unspecific binding sites were blocked by one injection of 0.1 mgÆmL)1 bovine serum albumin For the binding experiment proteins were injected at lm concentration for 60 s at 30 lLÆmin)1 Blanks were injections ... confirm the binding of the aggregated forms, albeit to a much smaller extent than that observed for some proteins that bind specifically to membranes, such as the small membrane-binding domains involved ... used as the signal hardly changes during the injection and was the same as before the injection during the dissociation phases Weak binding at the micromolar range was observed for stefin B at pH...
Ngày tải lên: 07/03/2014, 17:20