American Crystallographic Association (ACA)
American Society for Biochemistry and Molecular Biology
Belgian National Committee for Crystallography
Biological Structures Group
British Crystallographic Association
Chemical Crystallography Group
Czech and Slovak Crystallographic Association
Egyptian Society Of Crystallography and Applications
European Crystallographic Association
French Crystallographic Association
HUPO - the Human Proteome Organisation
International Society for Computational Biology
International Union of Crystallography
Italian Crystallographic Association
Proteome Society
Slovenian Crystallographic Society
Society of Crystallographers in Australia and New Zealand
Specialized group of Crystallography
Swiss Society for Crystallography
Turkish National Crystallographic Association
United States National Committee for Crystallography (USNCCr)