Tài liệu Báo cáo khoa học: 2,5-diamino-6-ribitylamino-4(3H)-pyrimidinone 5¢-phosphate synthases of fungi and archaea docx

... (in fungi and archaea) . We compare 2,5-diamino-6-ribitylamino-4(3H)-pyrimidinone 5¢-phosphate synthases from the yeastCandida glabrata, the archaeaon Methanocaldococcus jannaschii and theeubacterium ... Construction of a synthetic gene for 2,5-dia-mino-6-ribitylamino-4(3H)-pyrimidinone 5¢-phosphate synthase of A. aeolicus.W. Ro¨misch-Margl et al. Pyrimidine nucleotide reduction in fungi and archaea FEBS ... FEBS 2,5-diamino-6-ribitylamino-4(3H)-pyrimidinone 5¢-phosphate synthases of fungi and archaea Werner Ro¨misch-Margl1,2, Wolfgang Eisenreich1, Ilka Haase3, Adelbert Bacher1 and Markus Fischer31 Lehrstuhl fu¨r...

Tài liệu Báo cáo khoa học: Steady-state kinetic behaviour of functioning-dependent structures docx

... of transformation of S1into S3is calculated as corresponding to both the rate of consumption of S1, v(s1), and the rate of production of S3, v(s3), and the shape of the curves {s1, ... over a wide range of low values of s1has a relatively constant and highrate of consumption of S1but that with higher values of s1drops rapidly to a constant and low rate of con-sumption. ... s1,ofS1, the absolutevalues (positive) of the steady-state rate of transforma-tion of S1into S3is calculated as corresponding toboth the rate of consumption of S1, v(s1), and the...

Tài liệu Báo cáo khoa học: Cytokinin oxidase/dehydrogenase genes in barley and wheat docx

... content of 7- and 14-day-old plants.pH optimum and substrate speciﬁcity of barley CKXThe effect of pH on the activity of recombinant HvCKX2 and CKXs from grain, root and leaf extracts of barley ... Experimental Botany of the Academy of Science, Olomouc,Czech Republic;3Institute of Biology/Applied Genetics, Free University of Berlin, Germany;4Department of Biological Chemistry,Faculty of Agriculture, ... Hordeum and Triticum, as well as report on thecloning of the ﬁ rst two CKX genes of barley and demonstrate functionality for one of them in transgenictobacco an d Arabidopsis plants.Materials and...

Tài liệu Báo cáo khoa học: "Cross-Domain Co-Extraction of Sentiment and Topic Lexicons" pdf

... foreach edge of the graph.6: Reﬁne the scoresS1 and S3 of the k2sentiment and topic word candidates using Eqs. (5) and (6) iteratively.7: Select k1new sentiment words and k1new ... set of nodesrepresents topic words, including new topic candi-dates and words in the lexicon C, and the other set of nodes represents sentiment words, including newsentiment candidates and ... k2sentimentwords and topic words with highest scores as candidates.5: Construct a bipartite graph between sentiment and topicwords on DlT and the k2sentiment- and topic- word can-didates, and calculate...

Tài liệu Báo cáo khoa học: Unraveling the catalytic mechanism of lactoperoxidase and myeloperoxidase A reﬂection on some controversial features Elena Ghibaudi and Enzo Laurenti docx

... features of the LPO and MPO catalytic cycle, such as theexistence of Compound I and Compound II isomers and the identiﬁcation of their spectroscopic properties. Afteraddressing each of these ... each of these questions, we will proposea new hypothesis that describes an integrated vision of thecatalytic mechanism of MPO and LPO.A brief survey of the absorption features of MPO, LPO and ... effect of H2O2or be part of a vestigial enzymaticpathway, now abandoned. O’Brien suggests its role is in theoxidation of physiologically relevant substrates, drugs and in the etiology of some...

Tài liệu Báo cáo khoa học: "A Finite-State Model of Human Sentence Processing" docx

... composed of featureslike POS, the number of complements, category of each complement, and the position of comple-ments. In their view, structural disambiguationis simply another type of lexical ... comparativedifﬁculty of object-relative clauses has been ex-plained in terms of verbal working memory (King and Just, 1991), distance between the gap and theﬁller (Bever and McElree, 1988), ... and testing is transparent and observable, and true probability rather than trans-formed weights are used, all of which makes iteasy to understand the mechanism of the proposedmodel.Although...

Tài liệu Báo cáo khoa học: Mapping the functional domain of the prion protein docx

... Several of the antibodies and antisera caused a concentration-dependent inhibition of the SOD-like activity of PrP. Theability of the antibodies and antiserum to inhibit the SOD-like activity of ... activity of PrP.Production of deletion mutants of PrPOn the basis of the results with antibodies, a series of PrPmutants were made to assess whether deletions of certaindomains of the protein ... deletions of two of the helicaldomains of the PrP protein, also possessed a high content of helical structure.Activity domains of PrPThis body of research has provided two sets of resultsconcerning...

Tài liệu Báo cáo khoa học: "ON THE AUTOMATIC TRANSFORMATION OF CLASS MEMBERSHIP CRITERIA" docx

... legal class must be assigned to the facts of the case at hand, but when an exact match cannot be roland between those facts and any of the definitions of possible legal classes. In that situation, ... application discussed here (the assignment of an instance of a knowledge structure to one of a set of classes), inexact matching and close relatives thereof are also found in several other domains ... by means of a process of ~ inmtRntlat~nn OF the deflnition the translation of the de/initlon f~'om a set of criteria for satisfying the definition into an exemplary instance of the concept...

Tài liệu Báo cáo khoa học: 1,5-Diamino-2-pentyne is both a substrate and inactivator of plant copper amine oxidases ppt

... Sayre51Department of Biochemistry,2Laboratory of Growth Regulators, and 3Department of Analytical Chemistry, Faculty of Science,Palacky´University, Olomouc, Czech Republic;4Department of Analytical ... (fragmentation: m/z 317.3, 305.2, 291.1, 253.2 and 240.1), 350.2 (fragmentation: m/z 333.2 and 307.1) and 431.3 (fragmentation: m/z 414.3, 388.3 and 337.1).MALDI-TOF-MS of the separated peak 1 provided asingle ... additionally demonstra-ted the presence of a triple bond (d 74.3 and 82.7 p.p.m) and aliphatic carbon atoms (signals of d 20–40 p.p.m), consis-tent with presence of an unoxidized DAPY moiety.The...

Tài liệu Báo cáo khoa học: The tandemly repeated domains of a b-propeller phytase act synergistically to increase catalytic efﬁciency doc

... asix-blade b-propeller containing five four-strandedsheets and one five-stranded sheet.Expression and purification of PhyH, PhyH-DI and PhyH-DIIPhyH, PhyH-DI and PhyH-DII were each expressed inEscherichia ... are two pairs of cysteine residues, Cys142 and Cys193 in PhyH-DII and Cys445 and Cys495 in PhyH-DI. These residuesare at the same positions as Cys157, Cys206, Cys450 and Cys498 of PhyS [6], which ... activity, and the optimalconcentration of Ca2+for the phytase activities of PhyH and PhyH-DII was 1 mm (Fig. 2A). Bothenzymes exhibited optimal activities at pH 7.0, and Z. Li et al. Catalysis of...

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