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44 citations found for Ravelli, R.B.G.

There are 53 articles by Ravelli, R. click here to see these.

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An efficient and fast pipeline is presented for obtaining near-atomic resolution structures from large single-particle cryo-EM data sets. The approach is virtually reference-free and is therefore less prone to the perils of reference bias.


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Co-crystallization of the third KH domain of human hnRNP K with a 15-mer ssDNA gave rod-shaped crystals belonging to the trigonal space group P3121 (unit-cell parameters a = 54.0, c = 149.7 Å) and diffracting to 2.4 Å resolution.

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A rapid, easy-to-perform translation calibration procedure has been developed for use with the EMBL/ESRF mini-[kappa] goniometer head and for other inverse-kappa goniometers designed for macromolecular crystallography. Regular calibration ensures the precision of experiments that rely on many degrees of freedom in crystal reorientation.

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Acta Cryst. (2009). A65, s166
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Hardware and software solutions for MX data-collection strategies using the EMBL/ESRF miniaturized multi-axis goniometer head are presented.

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Acta Cryst. (2007). A63, s78
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High-resolution X-ray tomography is used to reconstruct three-dimensional volumes of vitrified macromolecular crystals.

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The X-ray structure of the SRP14 homologue from S. pombe has been determined using a combination of the phases obtained from anomalous scattering and radiation damage collected at a single wavelength. The combined experimental phases were of excellent quality, demonstrating that this exemplary structure from the subfamily of yeast-type Alu-domain subunits is homodimeric.

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Quantitative X-ray induced radiation damage studies employing a model protein-DNA complex revealed a striking partition of damage sites. The DNA component was observed to be far more resistant to specific damage compared with the protein.

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A computational method to partially correct radiation damage to protein crystals is described and applied to a test data set with a weak anomalous signal. It is shown that the correction results in an enhancement of SAD phases and electron-density maps.

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Radiation-damage-induced phasing of PdII-bound and CuII-bound complexes of an 18-residue peptide with two disulfide bonds derived from the neurotoxin apamin rested on the differential susceptibility of radiation-sensitive groups in non-isomorphous lattices.

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The membrane-bound DegS protease from E. coli has been crystallized in a free and a substrate-bound form. The structure has been solved by molecular replacement and the solution was verified by radiation-induced phasing (RIP).


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Cryo-electron microscopy images of vitrified large macromolecular complexes can become blurred due to beam-induced specimen alterations. Exposure series are examined, and rigid and non-rigid image registration schemes are applied to reduce such blurring.

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The effects of dose and dose-rate were investigated for single-particle cryo-electron microscopy using stroboscopic data collection. A dose-rate effect was observed favoring lower flux densities.

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Serial crystallography generates partial reflections from still diffraction images. Partialities are estimated with EVAL ray-tracing simulations, thereby improving merged reflection data to a similar quality as conventional rotation data.

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C3D is a program for automated crystal centring with improved performance in crystal-centre detection using visible light.

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A systematic study of the specific radiation damage caused by different rates of X-ray irradiation is presented. The results suggest a small dose-rate related effect.

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