The structural walls

Demonstrating the main chemical constituents of Anodendron paniculatum (Roxb.) A.DC. Structural determination of isolated compounds; evaluation of the cytotoxic activities of isolated compounds against human cancer cell lines.

25p nguathienthan12 23-05-2021 13 3   Download

The research objectives of the thesis: Research to isolate, determine chemical structure and probe the biological activity of chemical components in apple and Docynia indica fruits; Research to optimize the extraction technology process to create products from Docynia indica fruits

27p extraenglish 24-05-2021 29 4   Download

Research to isolate, determine chemical structure and probe the biological activity of chemical components in apple and Docynia indica fruits; Research to optimize the extraction technology process to create products from Docynia indica fruits.

27p capheviahe27 23-02-2021 46 4   Download

In this paper, an innovative and efficient sandwich panel is proposed for the structural walls for quickly assembled post-disaster housing, as well as load bearing panels for pre-fabricated modular construction and semi-permanent buildings.

16p tohitohi 19-05-2020 10 1   Download

The objective of the thesis is to produce two types of phase-phase Nano TiO2 materials Nitrogen inclusion on aluminum oxide metal (N-TiO2 / Al2O3) applied as a filter for air purifiers and nanocomposit hydroxyl apatite coated on nitrogen doped TiO2 (HA / N-TiO2) on the wall to treat toluene, Bacteria and fungi contaminate the air.

26p xacxuoc4321 11-07-2019 41 6   Download

Agrobacterium tumefaciens is a Gram-negative, phytopathogenic bacterium and is characterized by an unique mode of action on dicotyledonous plants: it is able to genetically modify the host, and because of this feature, it is used as a tool for transgenic plants. Many experiments have demonstrated that lipopolysaccharides (LPSs) play an important role for the disease development, as they are involved in the adhesion process of the bacterium on the plant cell wall.

4p system191 01-06-2013 32 4   Download

Expansins are a family of proteins that catalyze pHdependent long-term extension of isolated plant cell walls. They are divided into two groups, a and b, the latter consisting of the grass group I pollen allergens and their vegetative homologs. Expansins are suggested to mediate plant cell growth by interfering with either structural proteins or the polysaccharide network in the cell wall.

10p research12 01-06-2013 29 4   Download

Structures of cell wall anionic polymers of the strainStrep-tomycessp. VKMAc-2124, a causative agent of potato scab, which is phylogenetically the closest to plant pathogenic speciesS. setoniiandS. caviscabies, were studied. The strain contains threeanionicglycopolymers, viz., a teichuronicacid with a disaccharide repeatingunitfi6)-a-D-Glcp-(1fi4)-b-D-ManpNAc3NAcA-(1fi,ab-glucosylated polymer of 3-deoxy-D-glycero-D-galacto-non-2-ulopyranosonic acid (Kdn), and ab-glucosylated 1,5-poly(ribitol phosphate). ...

6p tumor12 22-04-2013 36 4   Download

Previously, we isolated a 4-kDa peptide capable of binding to a 43-kDa receptor-like protein and stimulating protein kinase activity of the 43-kDa protein in soybean. Both of them were found to localize in the plasma membranes and cell walls. Here, we report the physiological effects of 4-kDa peptide expressed transiently in the cultured carrot and bird’s-foot trefoil cells transfected with pBI 121 plas-mid containing the 4-kDa peptide gene.

8p tumor12 20-04-2013 44 4   Download

The antigenicity ofCandida lusitaniaecells was found to be thesameasthatof Candida albicansserotype A cells, i.e. both cell wall mannans react with factors 1, 4, 5, and 6 sera of Candida Check. However, the structure of the mannan of C. lusitaniaewas significantly different from that of C. albicansserotype A, and we found novelb-1,2 linkages among the side-chainoligosaccharides,Manb1fi2Manb1fi 2Mana1fi2Mana1fi2Man (LM5), and Manb1fi2Man-b1fi2Manb1fi2Mana1fi2Mana1fi2Man (LM6).

11p fptmusic 16-04-2013 55 6   Download

Streptococcus mitisstrain SK598, which represents a sub-group of biovar 1, possesses a unique variant of the C-polysaccharide found in the cell wall of all strains of Streptococcus pneumoniaeand in some strains ofS. mitis. This newvariant lacks the cholinemethyl groups in contrast to the previously characterized forms of C-polysaccharide, whichall containone or two choline residues per repeat. The following structure of the repeating unit of the SK598 polysaccharide was established: where AAT is 2-acetamido-4-amino-2,4,6-trideoxy-D-galactose....

6p fptmusic 16-04-2013 28 2   Download

Feruloyl esterases hydrolyse phenolic groups involved in the cross-linking of arabinoxylan to other polymeric structures. This is important for open-ing the cell wall structure making material more accessible to glycoside hydrolases. Here we describe the crystal structure of inactive S133A mutant of type-A feruloyl esterase fromAspergillus niger(AnFaeA) in complex with a feruloylated trisaccharide substrate.

10p fptmusic 11-04-2013 43 1   Download

The surface charge as well as the electrochemical properties and ligand binding abilities of the Gram-positive cell wall is controlled by the d-alanylation of the lipoteichoic acid. The incorporation of d-Ala into lipoteichoic acid requires the d-alanine:d-alanyl carrier protein ligase (DltA) and the carrier protein (DltC). We have heterologously expressed, purified, and assayed the substrate selectivity of the recombinant proteins DltA with its substrate DltC.

11p awards 06-04-2013 39 5   Download

The penicillin-binding proteins (PBPs) are ubiquitous bac-terial enzymes involved in cell wall biosynthesis,and are the targets of theb-lactam antibiotics. The low molecular mass Neisseria gonorrhoeaePBP 4 (NG PBP 4) is the fourthPBP revealed in the gonococcal genome. NG PBP 4 was cloned, overexpressed,purified,and characterized for b-lactam binding,DD-carboxypeptidase activity,acyl-donor substrate specificity,transpeptidase activity, inhibitionby a number of active site directed reagents,and pHprofile....

10p dell39 03-04-2013 37 3   Download

Phosphorylation of the mycobacterial transcriptional activator, EmbR, is essential for transcriptional regulation of theembCABoperon encoding cell wall arabinosyltransferases. This signaling pathway eventually affects the resistance to ethambutol (a frontline antimycobacterial drug) and the cell wall Lipoarabinomannan⁄Lipomannan ratio (an important determinant for averting the host immune response).

11p dell39 27-03-2013 36 2   Download

Thymidine kinases have been found in most organisms, from viruses and bacteria to mammals.Ureaplasma urealyticum(parvum), which belongs to the class of cell-wall-lacking Mollicutes, has no de novosynthesis of DNA precursors and therefore has to rely on the salvage pathway. Thus, thymi-dine kinase (Uu-TK) is the key enzyme in dTTP synthesis.

8p dell39 27-03-2013 33 2   Download

The nematocyst capsules of the cnidarians are specialized explosive organelles that withstand high osmotic pressures of
15 MPa (150 bar). A tight disulfide network involving cysteine-rich capsule wall proteins, like minicollagens and nematocyst outer wall antigen, characterizes their molecular composition.

8p inspiron33 25-03-2013 43 3   Download

Hydrogen sulfide is a potent toxin of aerobic respiration, but also has physiological functions as a signalling molecule and as a substrate for ATP production. A mitochondrial pathway catalyzing sulfide oxidation to thio-sulfate in three consecutive reactions has been identified in rat liver as well as in the body-wall tissue of the lugworm,Arenicola marina.

10p galaxyss3 07-03-2013 34 4   Download

Plant family 32 glycoside hydrolase enzymes include hydrolases (cell wall invertases, fructan exohydrolases, vacuolar invertases) and fructosyltrans-ferases. These enzymes are very similar at the molecular and structural levels but are functionally different. Understanding the basis of the func-tional diversity in this family is a challenging task.

11p viettel02 20-02-2013 45 2   Download

Candida albicansexo-b-1,3-glucanase (Exg; EC 3.2.1.58) is implicated in cell wall b-d-glucan remodelling through its glucosyl hydrolase and⁄or transglucosylase activities. A pair of antiparallel phenylalanyl residues (F144 and F258) flank the entrance to the active site pocket. Various Exg mutants were studied using steady-state kinetics and crystallography aiming to understand the roles played by these residues in positioning the b-1,3-d-glucan substrate.

13p viettel02 19-02-2013 53 8   Download