Collaborative Computational Project No. 4
Software for Macromolecular X-Ray Crystallography

   ***   New CCP4 documentation wiki available at http://ccp4wiki.org/   ***   CCP4 6.1.2 available, see Downloads   ***   Newsletter 47 now available   ***

CCP4 exists to produce and support a world-leading, integrated suite of programs that allows researchers to determine macromolecular structures by X-ray crystallography, and other biophysical techniques. CCP4 aims to develop and support the development of cutting edge approaches to experimental determination and analysis of protein structure, and integrate these approaches into the suite. CCP4 is a community based resource that supports the widest possible researcher community, embracing academic, not for profit, and for profit research. CCP4 aims to play a key role in the education and training of scientists in experimental structural biology. It encourages the wide dissemination of new ideas, techniques and practice.

CCP4 Documentation Wiki
CCP4 Wiki For up-to-date documentation on all of CCP4's software and lots of other useful information for X-ray crystallographers see the CCP4 Wiki.
CCP4 Software Suite
The current version is CCP4 6.1.2 (13 Aug 2009).
  • refmac5.5 twinning refinement
  • buccaneer low resolution building
  • imosflm data processing
See here for details of new features and updates. For the latest patches and updates to the current release of CCP4 see the Updates page.
CCP4 Study Weekend 2010
See details of past Study Weekends and proceedings
PX News
Browse full news archive