Báo cáo khoa học: " Effects of endomycorrhizal development and light regimes on the growth of Dicorynia guianensis Amshoff seedlings" pptx

... University of Chicago Press, Chicago and London, 1994.[19] Fetcher N., Strain B.R., Oberbauer S.F., Effects of light regime on the growth, leaf morphology, and water relations of seedlings of two ... in the long run and that endomycorrhizal symbiosis is a key component of the seedlings.However, extrapolating these results to the real condi-tions in the forest must be done with precaution ... Bereau M., Louisanna E., Garbaye J., Effects of endomycorrhizas and nematodes on the growth of seedlings of Dicorynia guianensis Amshoff, a tree species of the tropicalrain forest in French Guyana,...

Báo cáo khoa học: Relationship between functional activity and protein stability in the presence of all classes of stabilizing osmolytes ppt

... affect the association of the substrate with the enzyme in anyone of several ways, e.g. through solvation effects on substrates or enzyme active sites and through their effects on the thermodynamic ... understanding the effect of osmolytes on protein stability, folding and the activity of proteins and enzymes, the relationshipbetween protein stabilization by osmolytes and its con-sequent effects ... little or no effect on the solvation properties of the substrate and the enzyme active sites or on theirthermodynamic activities. Another explanation forthese observations comes from our DGD°...

Báo cáo khoa học: X-ray crystallography, CD and kinetic studies revealed the essence of the abnormal behaviors of the cytochrome b5 Phe35ﬁTyr mutant pdf

... any hydrogen bond with the proteinatoms. The former propionate displays the conservedconformation in the structures of the Phe35fiTyr mutant and of the wild-type protein as well as other mutants.However, ... chainconformation of this residue. The shift of the Ca atom of Tyr35 of the Phe35fiTyr mutant from that of Phe35 of the wild-type cyt b5is 0.21 A˚, within the error limit. The sidechain of Tyr35 ... resultsdemonstrate that the Phe35fiTyr mutant increases not only the affinity of the heme to the polypeptide chain but also the stability of the secondary structure. The kinetics of the heme dissociation...

Báo cáo khóa học: CD38 is expressed as noncovalently associated homodimers on the surface of murine B lymphocytes doc

... suggest that the stabilization of CD38 homodimers by crosslinkers depends strongly on the conformation and orientation between the CD38monomers.It has been reported that NP-40 and Triton X-100stabilize ... values of each of the clones). The relative enzyme activity of each of the mutants is given in parentheses. It was determined by setting the Vmaxadjustedactivity of CD38-WT to 100% and then ... expression of CD38 on the plasma membrane and the half-lives of these CD38 mutant proteins on the plasma membrane were signiﬁcantly reduced. Together,these results show that CD38 is expressed as noncova-lently...

Báo cáo khoa học: Nuclear factor kappa B and tumor necrosis factor-alpha modulation of transcription of the mouse testis- and pre-implantation development-speciﬁc Rnf33⁄Trim60 gene pot

... R4) in the construct F2 resultedin the abolishment of 80% of the relative luciferaseactivity, despite the presence of exon 1 and the upstream sequence (Fig. 3A). A further deletion inconstruct ... Identiﬁcation of the core promoter elements. In the experiments, mutation and deletion luciferase constructs were derived from the F1 fragment that con-tained the upstream regulation region, exon 1 and ... deletions of the in-tronic sequence of F1 from the 3¢ end in constructs F2 and F3 led to a progressive reduction in transcriptionalactivities. The ﬁrst 3¢ segment deleted in the intronsequence...

Tài liệu Báo cáo khoa học: FGF-2, IL-1b and TGF-b regulate ﬁbroblast expression of S100A8 doc

... upstream of the transcrip-tion initiation site, untranslated intron 1 and sequencesupstream of exon 1, were used to evaluate activities of deletion constructs after transient transfection into ... For other controls, pri-mary or secondary antibodies were omitted.Acknowledgements The authors are obliged to Professor Rolf Howlett for the preparation and donation of wound specimens and Drs ... regulation of growth arrest and apoptosis [16], stimulation of cell proliferation [17] and protection against apoptosis [18]. Other S100proteins also have proliferative and anti-apoptoticeffects...

Tài liệu Báo cáo khoa học: "An Information-Theory-Based Feature Type Analysis for the Modelling of Statistical Parsing" docx

... represents the node, “X” represents the constitute label, the headword or POS of the headword of the node.In the following, the units of PIQ are bits. ConclusionAmong the feature types in the same ... 3.2398Objective feature typeY= the second word in the objective word sequence 3.0071 ConclusionEither of the predictive information quantity of the first word and the second word in the objective word ... brother of the current node 0.5832 2.1511 1.2186Y= the second right brother of the current node 0.1066 0.5044 0.2525Y= the second left brother of the current node 0.0949 0.6171 0.2697Y= the...

Báo cáo khoa học: "Constituent-Based Morphological Parsing: A New Approach to the Problem of Word-Recognition" pdf

... Reduplication is the verbal reduplication morpheme. Of interest in this example are regressive Vowel Harmony 4, and, of course, reduplication. The input consists of the stream of segments and a ... cliticization. Also exemplary of the division of duty between the morphophonological parser and the syntactic parser is the dual status of subcategorization in Warlpiri. For example, the ergative ... but the fine details of the phonological structure are not needed. The potential non-isomorphism between phonological and syntactic structure is derived from the narrow bandwidth of the channel...

Báo cáo khoa học: Energetic coupling along an allosteric communication channel drives the binding of Jun-Fos heterodimeric transcription factor to DNA docx

... aresult of the loss of energetic contributions of alanine-substituted residues rather than the effect of suchmutations on protein structure.In summary, the fact that the combined loss of freeenergy ... tissues, theyall recognize only a handful of promoter elements,many of which are subsets of each other [9,13,47–49].This begs the question of the precise nature of the speciﬁcity of bZIP–DNA ... con-tacts with the consensus nucleotides within the TREduplex (Fig. 1), these observations suggest stronglythat their alanine substitution not only results in the loss of key ion pairing and...

Báo cáo khoa học: An E3 ubiquitin ligase, Synoviolin, is involved in the degradation of immature nicastrin, and regulates the production of amyloid b-protein doc

... indicatethat a functional deletion of Synoviolin causes a changein the intracellular trafﬁcking of NCT.Effect of Synoviolin on the production of AbNCT is one of the essential cofactors of the c-secretasecomplex. ... B, the overexpression of Synoviolinenhanced the production of Ab40 and Ab42 by abouttwofold, whereas the secretion of soluble APP was notchanged in these cells. Figure 5C also showed that the endogenous ... of NCT within the Golgi compartment, because the maturation of the sugar modiﬁcation of the pro-tein occurs within the Golgi compartment. Recently,there has been an expansion of the recognized...

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