Data Item _pdbx_dcc_map.density_connectivity
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General 
- Item name
- _pdbx_dcc_map.density_connectivity
- Category name
- pdbx_dcc_map
- Attribute name
- density_connectivity
- Required in PDB entries
- no
- Used in currrent PDB entries
- No
Item Description
Defined in sfcheck. It is the product of the (2Fobs-Fcal) electron
density values for the backbone atoms N, CA and C, and in the case of
RNA/DNA, for P, O5', C5', C3', O3'. Low values of this index indicate
breaks in the backbone electron density which may be due to flexibility
of the chain or incorrect tracing.
Data Type 
- Data type code
- float
- Data type detail
- float item types are the subset of numbers that are the floating numbers.
- Primitive data type code
- numb
- Regular expression
- -?(([0-9]+)[.]?|([0-9]*[.][0-9]+))([(][0-9]+[)])?([eE][+-]?[0-9]+)?