TheCollaborative Computational Project Number 4 inProtein Crystallography (CCP4) was set up in 1979 in theUnited Kingdom to support collaboration between researchers working in software development and assemble a comprehensive collection of software forstructural biology. The CCP4 core team is located at the Research Complex at Harwell (RCaH) atRutherford Appleton Laboratory (RAL) inDidcot, near Oxford, UK.

CCP4 was originally supported by the UKScience and Engineering Research Council (SERC), and is now supported by theBiotechnology and Biological Sciences Research Council (BBSRC). The project is coordinated atCCLRC Daresbury Laboratory. The results of this effort gave rise to the CCP4 program suite,^[1] which is now distributed to academic and commercial users worldwide.

• CCP4i – CCP4 Graphical User Interface
• CCP4MG – CCP4 Molecular Graphics Project
• Coot – Graphical Model Building
• HAPPy – automated experimental phasing
• MrBUMP – automated Molecular Replacement
• PISA – Protein Interfaces, Surfaces and Assemblies
• MOSFLM GUI – building a modern interface to MOSFLM

• CCP4 (file format)

• Official website
• CCP4 Documentation wiki — concentrates only on CCP4
• CCP4 Community wiki — general X-ray crystallography topics related to CCP4

• Crystallography
• Medical Research Council (United Kingdom)
• Science and technology in Oxfordshire
• Vale of White Horse

• Use dmy dates from April 2022
• Official website different in Wikidata and Wikipedia