PDBx/mmCIF
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Data Item
_chem_shift_ref.ref_type
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General
Item name
_chem_shift_ref.ref_type
Category name
chem_shift_ref
Attribute name
ref_type
Required in PDB entries
no
Used in currrent PDB entries
No
Item Description
The reference type may be either direct (against a value measured with a chemical compound) or indirect (calculated from chemical shift ratios).
Item Example
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direct
Data Type
Data type code
line
Data type detail
char item types / multi-word items ...
Primitive data type code
char
Regular expression
[][ \t_(),.;:"&<>/\{}'`~!@#$%?+=*A-Za-z0-9|^-]*
Controlled Vocabulary
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Allowed Value
Details
direct
indirect
Controlled Vocabulary at Deposition
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Allowed Value
Details
direct
indirect