Publications by authors named "Wenshi Wu"

Preharvest sprouting (PHS) is a serious problem in rice production as it leads to reductions in grain yield and quality. However, the underlying mechanism of PHS in rice remains unclear. In this study, we identified and characterized a preharvest sprouting and seedling lethal (phssl) mutant.

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Background: The P-stalk is a conserved and vital structural element of ribosome. The eukaryotic P-stalk exists as a P0-(P1-P2) pentameric complex, in which P0 function as a base structure for incorporating the stalk onto 60S pre-ribosome. Prior studies have suggested that P0 genes are indispensable for survival in yeast and animals.

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Rendering glinty details from specular microstructure enhances the level of realism in computer graphics. However, naive sampling fails to render such effects, due to insufficient sampling of the contributing normals on the surface patch visible through a pixel. Other approaches resort to searching for the relevant normals in more explicit ways, but they rely on special acceleration structures, leading to increased storage costs and complexity.

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In the title compound, C14H12ClN3O2, the acyl-hydrazone base [C(=O)-N-N=C] is essentially planar, with an r.m.s.

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This communication describes the synthesis and inhibitory activities of thirty-seven novel C-terminal agmatine dipeptides used as screening compounds to study the structure-activity relationship between active-site peptidomimetics and the West Nile virus (WNV) NS2B/NS3 serine protease. Our efforts lead to the discovery of a novel agmatine dipeptide inhibitor (compound 33, IC50 2.6 ± 0.

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Diethyl pyrazine-2,5-dicarboxyl-ate.

Acta Crystallogr Sect E Struct Rep Online

July 2012

The mol-ecule of the title compound, C(10)H(12)N(2)O(4), is located around an inversion center. The carboxyl-ate groups are twisted slightly with respect to the pyrazine ring, making a dihedral angle of 2.76 (19)°.

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In the title compound, [Cu(C(13)H(8)N(4)O(3))(H(2)O)]·3H(2)O, the complex molecule, except for the aqua ligand, is essentially planar [r.m.s.

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Background: Bacillus cereus C1L is a plant growth-promoting rhizobacterium and can elicit induced systemic resistance (ISR) in plants against necrotrophic pathogens. However, little is known about ISR elicitors produced by B. cereus C1L, and no ISR elicitor has been identified and characterised.

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In continuation to our studies toward the identification of direct anti-cancer targets, here we showed that destruxin B (DB) from Metarhizium anisopliae suppressed the proliferation and induced cell cycle arrest in human colorectal cancer (CRC) HT29, SW480 and HCT116 cells. Additionally, DB induced apoptosis in HT29 cells by decreased expression level of anti-apoptotic proteins Bcl-2 and Bcl-xL while increased pro-apoptotic Bax. On the other hand, DB attenuated Wnt-signaling by downregulation of β-catenin, Tcf4 and β-catenin/Tcf4 transcriptional activity, concomitantly with decreased expression of β-catenin target genes cyclin D1, c-myc and survivin.

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In the crystal structure of the centrosymmetric binuclear title complex, [Ni(2)(C(12)H(8)N(2)O(2)S)(2)(CH(3)OH)(4)], there are inter-molecular O-H⋯O, O-H⋯N and O-H⋯S hydrogen bonds. These help to stabilize the structure and link the mol-ecules, forming a three-dimensional network structure. The Ni(2+) cation exists in a slightly distorted octahedral NiNO(5) coordination environment.

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The title complex, [CuBr(C(6)H(4)NO(3))(H(2)O)](n), exhibits a layered structure which is stabilized by inter-molecular O-H⋯O and O-H⋯Br(-) hydrogen bonds, van der Waals forces and π-π inter-actions [centroid-centroid distance = 3.747(4) Å] between the parallel pyridine rings from two neighboring layers.

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Aim Of The Study: The purpose of this study is to isolate the pure compounds from the extracts of Cordyceps militaris obtained through solid-state cultivation process, and evaluate their anti-inflammatory and anticancer properties.

Materials And Methods: Silica gel column chromatographic purification of Cordyceps militaris extracts resulted in the isolation of 10 pure compounds (1-10). The compounds 1-10 were examined for their growth inhibitory properties against nitric oxide (NO), tumor necrosis factor (TNF)-alpha and interleukin (IL)-12 enhanced production from LPS/IFN-gamma-stimulated macrophages.

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Diisopropyl pyrazine-2,5-dicarboxyl-ate.

Acta Crystallogr Sect E Struct Rep Online

August 2010

The mol-ecule of the title compound, C(12)H(16)N(2)O(4), is located on an inversion center. The carboxyl-ate groups are twisted slightly with respect to the pyrazine ring, making a dihedral angle of 6.4 (3)°.

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In the crystal structure of the title compound, C(11)H(15)N(3)O(3), mol-ecules are linked into a chain by inter-molecular N-H⋯O hydrogen bonds.

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Citrus grandis (L.) Osbeck (red wendun) leaves have been used in traditional Chinese medicine to treat several illnesses including diabetes. However, there is no scientific evidence supporting these actions and its active compounds.

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The title compound, C(12)H(9)N(2)O(2) (+)·Cl(-)·2H(2)O, exhibits a layered structure which is stabilized by inter-molecular O-H⋯O, O-H⋯Cl(-) and N(+)-H⋯Cl(-) hydrogen bonds, and π-π inter-actions (centroid-centroid distances = 3.654 and 3.583 Å).

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In the title compound, C(12)H(16)N(6)O(2)·2H(2)O, the organic mol-ecule, except for the methyl H atoms, is essentially planar, the r.m.s.

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Two new compounds, [Ph3PCH2Ph]2[Zn3(tp)3Cl2] (1) and Ni3(tma)2(H2O)8 (2) (tp = terephthalate, tma = trimesate), are metal-polycarboxylate coordination polymers prepared by similar hydrothermal synthesis techniques. X-ray single-crystal structural analysis shows that both compounds crystallize in the 2D claylike lamellar architectures, in which 1 possesses the interlayer [Ph3PCH2Ph]+ exchangeable cation and has been confirmed by PXRD patterns. 1 (C74H56Cl2O12P2Zn3) belongs to monoclinic P21/c, Z = 2 (a = 18.

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