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A Determinant of Odorant Specificity Is Located at the Extracellular Loop 2-Transmembrane Domain 4 Interface of an Anopheles gambiae Odorant Receptor Subunit

01-11-2014 | David T. Hughes; Guirong Wang; Laurence J. Zwiebel; Charles W. Luetje, Chemical Senses, 2014

To explore the structural basis for odorant specificity in odorant receptors of the human malaria vector mosquito, Anopheles gambiae, odorant-binding subunits (Agam\Ors) expressed in Xenopus oocytes in combination with Agam\Orco (coreceptor subunit) were assayed by 2-electrode voltage clamp ...

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A luminescent cadmium metal-organic framework for sensing of nitroaromatic explosives

22-10-2014 | Chuanqi Zhang; Libo Sun; Yan Yan; Jiyang Li; Xiaowei Song; Yunling Liu; Zhiqiang Liang, Dalton Transactions, 2014

A novel metal-organic framework [Cd3(TPT)2(DMF)2]•(H2O)0.5 (1) has been solvothermally synthesized by using a new rigid unsymmetrical tricarboxylate ligand p-terphenyl-3,4′′,5-tricarboxylic acid (H3TPT). Single-crystal X-ray diffraction analysis reveals that 1 possesses a three-dimensional (3D) ...

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Environment friendly template free microwave synthesis of sub-micron sized hierarchical titania nanostructures and their application in photovoltaics

22-10-2014 | Sofia Javed; Muhammad Aftab Akram; Mohammad Mujahid, CrystEngComm, 2014

A simple low temperature microwave synthesis of hierarchical nanostructures (HNSs) of titania in DI water is reported. A great advantage of the reported method is the production of sub-micron sized HNSs without any surfactant or hydrofluoric acid. The hierarchical morphology provides huge surface ...

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Synthesis and Biological Evaluation of (−)-Kainic Acid Analogues as Phospholipase D-Coupled Metabotropic Glutamate Receptor Ligands

22-10-2014 | Chiara - Zanato; Sonia - Watson; Guy S. Bewick; Matteo Zanda; William T Harrison, Organic & Biomolecular Chemistry, 2014

(−)-Kainic acid potently increases stretch-induced afferent firing in muscle spindles, probably acting through a hitherto uncloned phospholipase D (PLD)-coupled mGlu receptor. Structural modification of (−)-kainic acid was undertaken to explore the C-4 substituent effect on the pharmacology ...

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Ammonia assisted formation of tubular MOP-18 crystals

22-10-2014 | Wei Cao; Yiyin Mao; Xinsheng Peng, CrystEngComm, 2014

Tubular MOP-18 crystals have been successfully prepared by cooling-induced crystallization from copper hydroxide nanostrands and 5-dodecyloxybenzene-1,3-dicarboxylic acid DMF (N, N-dimethyl-formamide)/ammonia solution. The dependence of the crystal morphologies on the cooling rate is investigated ...

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Hydrazinonicotinic acid as a novel matrix for highly sensitive and selective MALDI-MS analysis of oligosaccharides

21-10-2014 | Jing Jiao; Ying Zhang; Pengyuan Yang; Haojie Lu, Analyst, 2014

Analysis of oligosaccharides with matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) remains challenging due to their low ionization efficiency. The sensitivity achieved by MS for oligosaccharides lags far behind that for proteins/peptides. Here, the hydrazinonicotinic acid ...

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Supramolecular hydrogels derived from cyclic amino acids and their applications in the synthesis of Pt and Ir nanocrystals

21-10-2014 | Chuanqing Kang; Lanlan Wang; Zheng Bian; Haiquan Guo; Xiaoye Ma; Xuepeng Qiu; Lianxun Gao, Chemical Communication, 2014

New simple hydrogelators containing the structural features of cyclic amino acids were investigated for water gelation through H-bonds from carboxylic acids and amino groups, showing for the first time the use of a single amino acid as a hydrogelator. The hydrogels were used for the synthesis of ...

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A recyclable chitosan-based QCM biosensor for sensitive and selective detection of breast cancer cells in real time

21-10-2014 | Shaolian Zhang; Haihua Bai; Jinmei Luo; Peihui Yang; Jiye Cai, Analyst, 2014

A highly sensitive and recyclable quartz crystal microbalance (QCM) biosensor was developed using chitosan (CS) and folic acid (FA), generating conjugates that are selectively recognized by MCF-7 cancer cell over-expressed folic acid receptors. The prepared CS–FA conjugate was characterized by ...

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Hydrogen bonded-extended lanthanide coordination polymers decorated with 2,3-thiophenedicarboxylate and oxalate: synthesis, structures, and properties

21-10-2014 | zhaohao li; Li-Ping Xue; Li-Li Shang; bangtun zhao; jian kan; Weiping Su, CrystEngComm, 2014

Five new lanthanide coordination polymers, {[Ln2(tdc)2(C2O4)(H2O)4]•(H2O)}n (Ln = Nd (1), Eu (2), Gd (3), Tb (4), Ho (5); H2tdc = 2,3-thiophenedicarboxylic acid), have been synthesized by hydrothermal reactions of H2tdc, sodium oxalate and corresponding lanthanide nitrate. Crystallographic data ...

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Biguanide and squaric acid as pH-dependent building blocks in crystal engineering

21-10-2014 | Mihaela-Diana Şerb; Irmgard Kalf; Ulli Englert, CrystEngComm, 2014

In solutions containing biguanides and squaric acid, the pH value allows to control the outcome of crystallization. From N,N-dimethylbiguanide, N-phenylbiguanide and N-o-tolylbiguanide 10 different salts have been obtained as a function of proton activity. The constituents in these ionic solids ...

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