CCP4%20

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CCP4 Software for Macromolecular Crystallography
ABOUT CCP4 ...
The Suite comprises over a hundred programs
covering various aspects such as
CCP4 is Collaborative Computational Project no.4,
established in 1979 to encourage collaborative
development of software for protein and
macromolecular crystallography in the UK.

• data processing and reduction
• map calculation and analysis
• phasing by MIR, MR, MAD and direct methods
• model refinement

The Project has developed a suite of programs,
known as the CCP4 suite, which are widely used
around the world for macromolecular structure
determination by X-ray crystallography.
The Suite is constantly under revision with new
programs being added and existing programs
extended and improved. CCP4 welcome suggestions
for additions to the Suite.
ACKNOWLEDGEMENTS
The Project is supported by the BBSRC, by income
from commercial distribution of the programs, and
by CCLRC Daresbury Laboratory.
Many people have contributed to the CCP4 Project
since its inception. Special thanks are due to
members of the Working Groups and to Daresbury
staff.
Details of the authors of individual programs are
given in the corresponding program documentation,
and in the CCP4 manual.
CCP4 relies on the contribution of programs from
many protein crystallographers, and we would like
to thank them all for their efforts and for their
generosity in allowing us to distribute their
code to a wider community of users.
We would also like to thank all the groups who
have allowed us to use their structures in this
display.