báo cáo khoa học: " Glutathione synthesis is essential for pollen germination in vitro" ppt

... transcribed in pollen and spermcells. Therefore, we decided to investigate the role of glutathione synthesis for pollen germination in vitro in Arabidopsis thaliana accession Col-0 and in the glutathione ... glutathione depletion in pollen grains triggered disturbances in auxin metabolismwhich led to inhibition of pollen germination. Conclusions: This study demonstrates that glutathione synthesis ... glutathione synthesis is essential for pollen germination in vitro andthat glutathione depletion and auxin metabolism are linked in pollen germination and early elongation of the pollen tube, as IAA...

báo cáo khoa học: " Ornithine-δ-aminotransferase is essential for Arginine Catabolism but not for Proline Biosynthesis" ppsx

... biosynthesis is constitutively localised in plastids. For details on Arg biosynthesis up to Orn see [3]. ASL: argininosuccinate lyase; ASSY: argininosuccinate synthetase; OTC: ornithine transcarbamylase, ... increase in the contents of leucine, iso-leucine, phenylalanine and lysine in Orn-fed, and par-tially also in Arg-fed, oat mutants indicated disturbancesof amino acid metabolism. All increased amino ... 14(page number not for citation purposes)BMC Plant BiologyOpen AccessResearch articleOrnithine-δ-aminotransferase is essential for Arginine Catabolism but not for Proline BiosynthesisDietmar Funck*1,...

Tài liệu Báo cáo khoa học: "Empirically Estimating Order Constraints for Content Planning in Generation" pptx

... follows:Scanning. For a given window size n, all the pos-sible subsequences (i.e., n-grams) occurring in the training set are identiﬁed. This process is repeated for different window sizes.Generalizing. ... Association for Computational Linguis-tics (ACL’97), Madrid, Spain.Johanna D. Moore and C´ecile L. Paris. 1993. Plan-ning text for advisory dialogues: Capturing inten-tional and rhetorical information. ... violated in any trainingsequence. We do this in order to obtain clear-cutconstraints. Using the number of times a givenconstraint is violated as a quality measure is astraight-forward extension...

Báo cáo khoa học: " Seroprevalence and risk factors for bovine brucellosis in Jordan" pptx

... diseases that have an infectious nature. In addition, controlling brucellosis in small ruminants (mainly by Rev-1 vaccination) will indirectly reduce the prevalence of this disease in other animal ... of the disease. Moreover, since vaccination against bovine brucellosis is not practiced in Jordan, false seropositivity due to vaccination was absent. In conclusion, this study is the first ... veterinary service has been identified as a risk factor for brucellosis in Argentina [23] and Mexico [11]. In this investigation, we used two serological assays: the RBPT and indirect ELISA....

Báo cáo khoa học: N-Glycosylation is important for the correct intracellular localization of HFE and its ability to decrease cell surface transferrin binding pptx

... offunction.N-Glycosylation is important for HFE regulationof transferrin bindingPrevious reports have established that in certain celltypes HFE acts to regulate intracellular iron levels bydecreasing the binding ... othergenes involved in iron metabolism. This includes hepci-din, a 25 amino acid antimicrobial peptide that is expressed in liver cells and is now recognized as a keyregulator of iron homeostasis in ... mutant was func-tionally deﬁcient in b2-microglobulin interactions and incapable ofregulating transferrin binding, once again, reminiscent of the HFE-C282Yvariant. Single and double mutants that...

Báo cáo khoa học: Two separate regions essential for nuclear import of the hnRNP D nucleocytoplasmic shuttling sequence ppt

... larger iso-forms (D1 and D2) contain inactive NLS with an exon7 insertion containing an NES and their associationswith a smaller isoform are involved in nuclear importand consequently D shuttling ... two C-terminal amino acids PYcompletely abolished the in vivo and in vitro nuclearimport activity as well as the binding to Trn-1. Ala-nine scanning mutagenesis of the sequence linking thetwo ... alternative pre-mRNA splicing gen-erates four protein isoforms. Genomics 48, 195–202.24 Lu JY & Schneider RJ (2004) Tissue distribution ofAU-rich mRNA binding proteins involved in regulationof...

Báo cáo khoa học: Cdk2 activity is dispensable for triggering replicon initiation after transient hypoxia in T24 cells docx

... against Cdk2,cyclin E or cyclin A and the antisense mRNA of Cdk2block initiation of DNA synthesis in mammalian cells[19,20]. In vitro initiation in G1nuclei is dependent onCdk2 ⁄ cyclin ... tightﬁtting pestle. Nucleosolic proteins were obtained after incu-bation in buffer B (buffer A containing 0.1% NP40). Theremaining chromatin bound proteins were solubilized byincubating the ... examined the inhibitory action of the Cdk2inhibitors olomoucine, roscovitine and staurosporine,all of which compete for the ATP-binding domain ofthe kinase [29,30], and the Cdk2 ⁄ cyclin inhibitory...

Báo cáo y học: "JNK suppression is essential for 17b-Estradiol inhibits prostaglandin E2-Induced uPA and MMP9 expressions and cell migration in human LoVo colon cancer cells" ppsx

... ofproteins by immunoblotting assay. Phosphorylation ofJNK1/2 was significantly induced within 15 min in response to PGE2 stimulation, and was maintained up for 24 h (Figure 3B). The findings suggested ... beoverexpressed in colon carcinomas [21,22]. In the observa-tions of Collins et al. [23], MMP-2 mRNA is more signifi-cantly expressed in tumor lesions than in normal colontissues. Immunostaining assay ... 3-kinase;PKB: protein kinase B; uPA: urokinase plasminogen activator; tPA: tissueplasminogen activator; PAI-1: plasminogen activator inhibitor-1; MMP: matrixmetallopeptidase; TIMP: tissue inhibitor...

Báo cáo khoa học: "Occult hypoperfusion is associated with increased mortality in hemodynamically stable, high-risk, surgical patients" pdf

... after admission to the ICU. The results of thisstudy indicate that the lactate level is superior to several clini-cal markers of shock or organ failure, including the heart rate,diuresis and ... beneficial in reducing morbidity and mortality in thestable surgical patient.Competing interestsNone declared.References1. Cain SM: Appearance of excess lactate in anesthetized dogsduring anemic ... and only when hemody-namic instability invasive monitoring is required. However,these endpoints have revealed the inadequacy of relyingsolely upon vital signs in resuscitation of critically...

Tài liệu Báo cáo khoa học: "Phrase-Based Translation Model for Question Retrieval in Community Question Answer Archives" ppt

... be context in- dependent in that they do not take into account anycontextual information in modeling word translationprobabilities. For example in Table 1, although nei-ther of the individual ... single word “cold” in Q2with a relative high translation probability. In this paper, we argue that it is beneﬁcial to cap-ture contextual information for question retrieval.To this end, inspired ... toa linear ranking framework for question retrieval in which different models are incorporated as features.We consider learning a relevance function of thefollowing general, linear form:Score(q,...

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