Data Item _pdbx_dcc_map.density_connectivity

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]+)?