The two halves of each bond are coloured according to the element of the atom at that end of the bond, allowing chemical structure and identity to be visualised in a manner familiar to most chemists.Ĭoot can also display electron density, which is the result of structure determination experiments such as X-ray crystallography and EM reconstruction. The atomic model is represented by default using a stick-model, with vectors representing chemical bonds. The model may then be rotated in 3D and viewed from any viewpoint. Other contributors include Kevin Cowtan, Bernhard Lohkamp and Stuart McNicholas ( University of York), William Scott ( University of California at Santa Cruz), and Eugene Krissinel ( Daresbury Laboratory).Ĭoot can be used to read files containing 3D atomic coordinate models of macromolecular structures in a number of formats, including pdb, mmcif, and Shelx files.
The primary author is Paul Emsley ( MRC-LMB at Cambridge). Additional support is available through the Coot wiki and an active COOT mailing list.
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Pre-compiled binaries are also available for Linux and Windows from the web page and CCP4, and for Mac OS X through Fink and CCP4. It is available from the Coot web site originally at the University of York, and now at the MRC Laboratory of Molecular Biology. Recent developments have enhanced the usability of the software for expert users, with customisable key bindings, extensions, and an extensive scripting interface.Ĭoot is free software, distributed under the GNU GPL. The software is designed to be easy-to-learn for novice users, achieved by ensuring that tools for common tasks are 'discoverable' through familiar user interface elements (menus and toolbars), or by intuitive behaviour (mouse controls).
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