Data Item _chem_comp.formula_mono_iso_wt_nat
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General 
- Item name
- _chem_comp.formula_mono_iso_wt_nat
- Category name
- chem_comp
- Attribute name
- formula_mono_iso_wt_nat
- Required in PDB entries
- no
- Used in currrent PDB entries
- No
Item Description
Mono-isotopic formula mass calculated using the most abundant naturally
occuring isotope for each atom.
Data Type 
- Data type code
- float
- Data type detail
- int 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]+)?