Data Item _pdbx_refine_component.B_iso_main_chain
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General 
- Item name
- _pdbx_refine_component.B_iso_main_chain
- Category name
- pdbx_refine_component
- Attribute name
- B_iso_main_chain
- Required in PDB entries
- no
- Used in currrent PDB entries
- No
Item Description
The average isotropic B factors for the group of atoms
(e.g. residue or ligand, side chain, main chain).
The B factors for each atom is given by _atom_site.B_iso_or_equiv
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]+)?