Tài liệu Báo cáo Y học: Role of sulfoquinovosyl diacylglycerol for the maintenance of photosystem II in Chlamydomonas reinhardtii ppt

Tài liệu Báo cáo Y học: Trehalose-based oligosaccharides isolated from the cytoplasm of Mycobacterium smegmatis Relation to trehalose-based oligosaccharides attached to lipid docx

... 269) 3143 The origin of these cytosolic oligosaccharides is notknown. They could be synthesized in the cytosol byglycosyltransferases which add glucosyl or galactosyl resi-dues to the free ... any of the reactions involved in their biosynthesis represent excellentpotential target sites for chemotherapeutic intervention in tuberculosis. However, in mycobacteria there may be asmany ... terminal galactose linked to one of the glucoses of the trehalose in either a 1–6 or 1–4 linkage, and the nonreducing glucose linked to the other trehaloseglucose in either a 1–6 or a 1–4 linkage.To...

Tài liệu Báo cáo khoa học: A systems biology approach for the analysis of carbohydrate dynamics during acclimation to low temperature in Arabidopsis thaliana doc

... suggest increasing the maximum activities of enzymes participating in sucrosecycling. Assuming that Rsch is optimized for coldacclimation, we suggest, on the basis of the results of the in silico ... successful metabolic engineering of freezing tolerance in plants should include such ananalysis of the dynamics of metabolism to gain com-prehensive information about the effects of individualoverexpression ... of Arabid-opsis leaves developing at low temperatures. Increasingcytoplasmic volume accompanies increased activities of enzymes in the Calvin cycle and in the sucrose-biosyn-thesis pathway....

Tài liệu Báo cáo khoa học: a-Conotoxins as tools for the elucidation of structure and function of neuronal nicotinic acetylcholine receptor subtypes doc

... binding sites apparently arenot detected by MII argues against a role for a3intheformation of native MII binding sites, but may reﬂect the scarcity of these sites in the investigated brain tissues ... a-conotoxinscan reveal ﬁrst clues for critical determinants of subtypeselectivity, and ultimately may lead to the engineering of a-conotoxins with tailored selectivity.Information on the binding ... binding sites within the same receptor, together with the dominant inhibitory effectobtained by binding of only one antagonist molecule,represents a particular advantage of a-conotoxins. Thesefeatures...

Tài liệu Báo cáo Y học: Role of electrostatics in the interaction between plastocyanin and photosystem I of the cyanobacterium Phormidium laminosum ppt

... [15])and if the interaction with photosystem I is the reason for having acidic residues in the interface (especially the betterconserved D44; see alignment in [44]). The results of thisstudy indicate ... & Diner, B.A. (1990) Puriﬁcation andcharacterization of photosystem- I and photosystem- II core com-plexes from wild-type and phycocyanin-deﬁcient strains of the cyanobacterium Synechocystis ... Sevilla y CSIC, Spain The interactions between photosystem I and ﬁve chargemutants of plastocyanin from the cyanobacterium Phormi-dium laminosum were investigated in vitro. The dependence of the...

Tài liệu Báo cáo Y học: Role of sulfoquinovosyl diacylglycerol for the maintenance of photosystem II in Chlamydomonas reinhardtii ppt

... Chlamydomonas (Eur. J. Biochem. 269) 2355 Role of sulfoquinovosyl diacylglycerol for the maintenance of photosystem II in Chlamydomonas reinhardtii Ayumi Minoda1, Norihiro Sato1, Hisayoshi ... main-taining PSII complexes in their proper state.Keywords: sulfoquinovosyl diacylglycerol; photosystem II; Chlamydomonas; thylakoid membrane; glycolipid. The primary process in photosynthesis ... hf-2withSQDGraisedtheloweredPSII activity. Chemical modiﬁcations of SQDG impaired the recovery of PSII activity. The results suggest that SQDG isindispensable for PSII activity in Chlamydomonas by main-taining...

Tài liệu Báo cáo Y học: Tissue factor pathway inhibitor A possible mechanism of action doc

... Veriﬁcation of the hypotheses for TFPI inhibitory mechanism.(A) Veriﬁcation of the hypothesis of the enzyme–product complexinhibition by TFPI. Factor Xa is inhibited by TFPI in the presence or in the ... the data of the study[18] (see below). In other cases the binding of factor Xa toTFPI was assumed to be plain bimolecular reaction basingon the data of the study [8]. The model including inhibition ... rates of the hypotheticalreactions of VIIa–TF:Xa–TFPI binding into the intermedi-ate TFPI–Xa–VIIa–TF inhibitory complex and intramole-cular conversion TFPI–Xa–VIIa–TF/Xa–VIIa–TF–TFPI in the...

Tài liệu Báo cáo Y học: Puriﬁcation, characterization, immunolocalization and structural analysis of the abundant cytoplasmic b-amylase from Calystegia sepium (hedge bindweed) rhizomes ppt

... the activity of the enzyme was measured by the dinitrosalicylicacid method.Inhibition of the enzyme activity by glucose, maltose andcyclohexaamylose For the study of the enzyme inhibition by glucose, ... by the inhibitors of the enzymatic activity.Therefore the iodine staining method is well suited for extensive kinetic analyses of puriﬁed b-amylases.Stability tests The heat stability of the ... each other. Only four of the cysteine residues of the C. sepium b-amylase (Cys83,Cys96, Cys209 and Cys344) are homologous to those found in soybean b-amylase (Cys82, Cys97, Cys208 and Cys343).On...

Tài liệu Báo cáo Y học: Convulxin induces platelet shape change through myosin light chain kinase and Rho kinase ppt

... by Rho kinaseand the other by the Ca2+-dependent activation of MLCkinase. These two pathways could be activated independ-ently of each other, depending on the type and concen-tration of ... rearrangements, by inhibiting actinassembly and focal adhesion in many cell types [8,9] through the decreased phosphorylation of various proteins [10,11]including MLC [12]. In a previous study of our ... not inhibit the early onset of convulxin-inducedtyrosine-phosphorylation of PLCc2, which also occurs in the presence of the aIIb/b3 antagonist, peptide RGDS, oractin polymerization inhibitors,...

Tài liệu Báo cáo Y học: Human and Drosophila UDP-galactose transporters transport UDP-N-acetylgalactosamine in addition to UDP-galactose doc

... the elongation of carbohydrate chains by appropriate glyco-syltransf erase s. Changes in the activities of NSTs mayaffect the structure of oligosaccharide chains by affecting the availability of substrates ... YPH500, and a t ransformant wasobtained. We prepared the microsomes from the transfor-mant, and analyzed them for the presence of the DmNSTprotein by Western blot analysis using anti-HA Ig (Fig. ... Biochemistry, University of Ken-tucky Medical Center, College of Medicine, Lexington, KY, USA.Present address: Department of Applied Chemistry, KogakuinUniversity, Nishi-Shinjuku, Shinjuku-ku,...

Tài liệu Báo cáo khoa học: "Phrase-Based Backoff Models for Machine Translation of Highly Inﬂected Languages" docx

... Machine Translation of Highly In ectedLanguagesMei YangDepartment of Electrical EngineeringUniversity of Washin g tonSeattle, WA, USAyangmei@ee.washington.eduKatrin KirchhoffDepartment of ... con-cludes.41out -of- domain data for the purpose of bootstrap-ping a part -of- speech tagger for Chinese, outper-forming standard methods such as EM.4 Backoff Models in MT In order to handle unseen words in the ... Re-ordering is applied before training and after gener-ating the output in the target language. Normaliza-tion of English/German in ectional morphologyto base forms for the purpose of word...

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