Data Item _chemical_formula.sum

General

Item name
_chemical_formula.sum
Category name
chemical_formula
Attribute name
sum
Required in PDB entries
no
Used in currrent PDB entries
No

Item Description

See the CHEMICAL_FORMULA category description for the rules for writing chemical formulae in which all discrete bonded residues and ions are summed over the constituent elements, following the ordering given in general rule (5) in the CHEMICAL_FORMULA category description. Parentheses are not normally used.

Item Example

 C18 H19 N7 O8 S

Data Type

Data type code
text
Data type detail
text item types / multi-line text ...
Primitive data type code
char
Regular expression
[][ \n\t()_,.;:"&<>/\{}'`~!@#$%?+=*A-Za-z0-9|^-]*

Aliases

Alias Item Name Dictionary Name Dictionary Version
_chemical_formula_sum cif_core.dic 2.0.1