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12 citations found for Pollard,

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3-Methylaspartase catalyses the deamination of 3-methylaspartic acid in the metabolism of (2S)-glutamic acid in C. tetanomorphum. The crystallization and preliminary structural characterization of 3-methylaspartase are reported.

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Acta Cryst. (1987). A43, C229
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Acta Cryst. (1987). A43, C238
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A description is given of an electron microscope system equipped with computer controlled electronic counting and recording of microscope images and diffraction patterns. An electrostatic reverse-field energy filter lens provides energy discrimination, and a unique insulated digital-to-analog converter provides computer control of the bias voltage added to the high voltage on the lens. Examples of scans across diffraction rings and thickness fringes in Al wedges are given showing the intensity from only the elastic electrons and from those electrons which have lost energy due to plasmon excitation.

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The actin-polymerizing protein complex Arp2/3 was crystallized in two new space groups. The new electron-density maps from these new crystal forms reveal some details that may help to elucidate how nucleation-promoting factors bind to the complex.


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The crystal structure of the heterodimeric ligand-binding domains of the B. ovis ecdysone receptor was solved in the presence of an ecdysteroid and a synthetic methylene lactam insecticide, respectively. Analysis of these structures reveals a new level of conformational flexibility for the ecdysone receptor upon binding of ligands.

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