Tài liệu Báo cáo khoa học: "Chronometric Studies of Lexical Ambiguity Resolution " doc

... Chronometric Studies of Lexical Ambiguity Resolution Mark S. Seidenberg University of Illinois at Urbana-Champaign Bolt, Beranek and Newman, Inc. ... likely to walk on the surface of a ship than on the surface of a pack of playing cards. Other types of contextual information can be brought to bear on ambiguity resolution as well. For example, ... ambiguity resolution has failed to yield a consistent set of findings or a general, non-controverslal theory. In this paper, we review the results of six experiments which form the basis of a model...

Tài liệu Báo cáo khoa học: Functional studies of active-site mutants from Drosophila melanogaster deoxyribonucleoside kinase Investigations of the putative catalytic glutamate–arginine pair and of residues responsible for substrate speciﬁcity docx

... particular,phosphorylation of dGuo was reduced markedly.Structure of Dm-dNK-E52D in complex with dTTPThe structure of one of the mutants, E52D, was solvedusing X-ray crystallography at a resolution of 2.5 A˚incomplex ... levels of phosphorylation expressed in rela-tion to percentage dThd phosphorylation of the wild-type. Relativephosphorylation expressed as a relation of the percentage of dThdphosphorylation of ... quantitation of microgram quantities of protein util-izing the principle of protein–dye binding. Anal Biochem72, 248–254.22 Knecht W, Bergjohann U, Gonski S, Kirschbaum B &Lofﬂer M (1996)...

Tài liệu Báo cáo khoa học: Comparative studies of endonuclease I from cold-adapted Vibrio salmonicida and mesophilic Vibrio cholerae docx

... Norwegian Structural Biology Centre, Faculty of Science, University of Tromsø, Norway2 Department of Molecular Biotechnology, Faculty of Medicine, University of Tromsø, NorwayThe marine and estuarine ... concentrations of NaCl. The periplasmic or extra-cellular localization of the enzymes, which renders them constantly exposedto the outer environment of the cell, may explain this ﬁne-tuning of bio-chemical ... enzyme must sacriﬁcesome of its stability. It has previously been suggestedthat the lower thermal stability of cold-adaptedenzymes is simply a consequence of the lack of select-ive pressure...

Tài liệu Báo cáo khoa học: The occurrence of hemocyanin in Hexapoda docx

... presence of hemocyanin in abroad range of ametabolous and hemimetabolous hexapod taxa. Weobtained a total of 12 full-length and 5 partial cDNA sequences of hemo-cyanins from representatives of Collembola, ... tracheal system of Collembo-la, with special reference to that of Sminthurus viridis,Lubb. Q J Microsc Sci 71, 15–30.39 Williams CB (1913) A summary of the present knowl-edge of the Protura. ... hemolymph of many arthropod species[1–4]. They are composed of six identical or similarsubunits with molecular masses of around 75 kDa[1,3]. A subunit may bind to an O2molecule by means of two...

Tài liệu Báo cáo khoa học: "Deterministic Parsing of Syntactic Non-fluencies" docx

... assigned a lexical category (or set of lexical categories) on the basis of a 2000 word lexicon and a morphological analyzer. The lexicon contains, for each word, a list of possible lexical categories, ... understanding of the differences in the kinds of non-fluencies that occur, we are left with a kind of grab bag of grammatical deviation that can never be analyzed except by some sort of general ... signal (specifically, a markedly abrupt cut-off of the speech signal) always marks the site where self-correction takes place. Of course, finding the site of a self-correction is only half the problem;...

Tài liệu Báo cáo khoa học: "EM Works for Pronoun Anaphora Resolution" docx

... obvious is our use of EMrather than theirs of Gibbs sampling. However, themost important difference is the choice of trainingdata. In our case it is a very large corpus of parsed,but otherwise ... train-ing data, they go through a larger corpus of unla-beled data collecting estimated counts of how of- ten each word generates a pronoun of a particulargender. They then normalize these ... range (a factor of 106) greatly exceeds those of the other parameters.Thus we take their nth root. This n is the last of the model parameters.5 Model Parameters5.1 IntuitionsAll of our distributions...

Tài liệu Báo cáo khoa học: Comparative studies on the functional roles of N- and C-terminal regions of molluskan and vertebrate troponin-I pdf

... (1971) The regulation of rabbitskeletal muscle contraction. I. Biochemical studies of the interaction of the tropomyosin–troponin complexwith actin and the proteolytic fragments of myosin.J Biol ... immediately.Measurements of Mg2+-ATPase activityThe inhibition of actomyosin-tropomyosin Mg2+-ATPaseby the TnI-fragment and the release of the inhibition byTnC were measured in the presence of 0.05 mgÆmL)1(1.2 ... (1997) Structural details of a cal-cium-induced molecular switch: X-ray crystallographicanalysis of the calcium-saturated N-terminal domain of troponin C at 1.75 A˚ resolution. J Mol Biol 273,...

Tài liệu Báo cáo khoa học: Molecular basis of glyphosate resistance – different approaches through protein engineering doc

... under-standing of the molecular mode of action of glypho-sate and the molecular basis for glyphosate resistance.Structure and function of EPSPSEPSPS catalyzes the transfer of the enolpyruvyl moiety of ... however, was devoid of substrate or inhibitor,and consequently did not reveal the nature of theactive site or the mode of action of glyphosate. A dec-ade later, the crystal structure of EPSPS was ... 4% of thetotal soluble protein content of the cell [48].Fig. 3. Microbial mechanisms of glyphosatedegradation. (A) Two principal pathways of glyphosate degradation are known.Top: cleavage of...

Tài liệu Báo cáo khoa học:Tyrosine phosphorylation of tau regulates its interactions with Fyn SH2 domains, but not SH3 domains, altering the cellular localization of tau ppt

... of tau with Fyn-SH3. We alsoshow that tau interacts with the SH2 domain of Fyn, and that this associa-tion, unlike that of Fyn-SH3, is inﬂuenced by Fyn-mediated tyrosine phos-phorylation of ... SH3 domain of Fyn binds to proline-richmotifs within the sequence PXXP in interacting pro-teins. Seven such motifs are present in the proline-richdomain of the longest isoform of tau in the ... this band was notapparent on western blots of lysates of Y394F tau(Fig. 2A). The absence of this larger species could indi-cate that phosphorylation of tau by Fyn is reducedand therefore, in...

Tài liệu Báo cáo khoa học: Crystal structure of an ascomycete fungal laccase from Thielavia arenaria – common structural features of asco-laccases ppt

... diffusion method. Two microlitres of protein solution at a concentration of 9 mgÆmL)1and 2 lL of crystallization solution were equilibrated against 500 lL of reservoir solution. Initial screens ... (2009)Structure–function studies of a Melanocarpus albomyceslaccase suggest a pathway for oxidation of phenoliccompounds. J Mol Biol 392, 895–909.47 Xu F (1997) Effects of redox potential and ... buffer at pH 6.0 (25 °C). Structural formulas of the substrates are presented. Redox potentials (E°)ofT1coppers of the laccases and redox potentials of the substrates at pH 4.5 and pH 6.0 are provided,...

Xem thêm