CCP4 (file format)

CCP4 (file format)

Infobox file format
name = ccp4
extension = .ccp4
mime =
owner =
creatorcode =
genre = electron density file
container for =
contained by =
extended from =
extended to =

The CCP4 file format is file generated by the Collaborative Computational Project Number 4 in 1979. The file format for electron density has become industry standard in X-ray crystallography and Cryo-electron microscopy where the result of the technique is a three-dimensional grid of voxels each with a value corresponding to density of electrons (see wave function) The CCP4 format is supported by almost every molecular graphics suite that supports volumetric data. The major packages include:

*Visual molecular dynamics
*PyMOL
*UCSF Chimera
*Bsoft
*Coot

ee also

*MTZ (file format)
*MRC (file format)
*EZD (file format)
*Chemical file format
**Protein Data Bank (file format)

External links

* [http://www.ccp4.ac.uk/html/maplib.html#description Format technical details]


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