International
Tables for Crystallography Volume G Definition and exchange of crystallographic data Edited by S. R. Hall and B. McMahon © International Union of Crystallography 2006 |
International Tables for Crystallography (2006). Vol. G. ch. 2.6, p. 70
Section 2.6.6.2.7. SUB_CATEGORY
a
Protein Data Bank, Research Collaboratory for Structural Bioinformatics, Rutgers, The State University of New Jersey, Department of Chemistry and Chemical Biology, 610 Taylor Road, Piscataway, NJ 08854-8087, USA, and bSchool of Biomedical and Chemical Sciences, University of Western Australia, Crawley, Perth, WA 6009, Australia |
The category SUB_CATEGORY provides data items to describe a subcategory and to associate a procedure with the subcategory (see Section 2.6.6.2.9). A subcategory is a set of data items within a category that have a particular association. A typical example would be a triad of positional coordinates x, y, z that are collectively assigned to a `cartesian' subcategory.