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PHENIX: a comprehensive Python-based system for macromolecular structure solution

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TLDR
The PHENIX software for macromolecular structure determination is described and its uses and benefits are described.
Abstract
Macromolecular X-ray crystallography is routinely applied to understand biological processes at a molecular level. How­ever, significant time and effort are still required to solve and complete many of these structures because of the need for manual interpretation of complex numerical data using many software packages and the repeated use of interactive three-dimensional graphics. PHENIX has been developed to provide a comprehensive system for macromolecular crystallo­graphic structure solution with an emphasis on the automation of all procedures. This has relied on the development of algorithms that minimize or eliminate subjective input, the development of algorithms that automate procedures that are traditionally performed by hand and, finally, the development of a framework that allows a tight integration between the algorithms.

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Principles of activation and permeation in an anion-selective Cys-loop receptor.

TL;DR: The first three-dimensional structure, to the authors' knowledge, of an inhibitory anion-selective Cys-loop receptor, the homopentameric Caenorhabditis elegans glutamate-gated chloride channel α (GluCl), is presented at 3.3 Å resolution.
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The inner junction complex of the cilia is an interaction hub that involves tubulin post-translational modifications.

TL;DR: The structural study of the doublets of Chlamydomonas reinhardtii and Tetrahymena thermophila shows that the inner junction serves as an interaction hub that involves tubulin post-translational modifications that contribute to the stability of thedoublet and hence, normal ciliary motility.
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Structural Basis for Allosteric Regulation of GPCRs by Sodium Ions

TL;DR: The high-resolution structure of a stabilized version of the human A2Aadenosine receptor (A2AAR) reveals the position of about 60 internal waters, which suggests an almost continuous channel in the GPCR and can explain the allosteric effects of Na+ on ligand binding and how cholesterol may contribute to G PCR stabilization.
References
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Journal ArticleDOI

A short history of SHELX

TL;DR: This paper could serve as a general literature citation when one or more of the open-source SH ELX programs (and the Bruker AXS version SHELXTL) are employed in the course of a crystal-structure determination.
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The Protein Data Bank

TL;DR: The goals of the PDB are described, the systems in place for data deposition and access, how to obtain further information and plans for the future development of the resource are described.
Journal ArticleDOI

Coot: model-building tools for molecular graphics.

TL;DR: CCP4mg is a project that aims to provide a general-purpose tool for structural biologists, providing tools for X-ray structure solution, structure comparison and analysis, and publication-quality graphics.
Journal ArticleDOI

Phaser crystallographic software

TL;DR: A description is given of Phaser-2.1: software for phasing macromolecular crystal structures by molecular replacement and single-wavelength anomalous dispersion phasing.
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